Migrating from jQuery to Vanilla JavaScript: A Step-by-Step Plan

Building Interactive UIs with jQuery: Tips, Plugins, and Patterns

jQuery remains a useful tool for quickly building interactive user interfaces, especially for projects that need broad compatibility or incremental enhancement. This article covers practical tips, reliable plugins, and common design patterns to help you create responsive, maintainable UIs with jQuery.

Why use jQuery today

• Compatibility: Works across older browsers without polyfills.
• Simplicity: Concise APIs for DOM selection, event handling, and AJAX.
• Ecosystem: Mature plugins and community-tested patterns.

Core tips for interactive UIs

1. Cache selectors
   • Reuse jQuery objects to avoid repeated DOM queries:

   javascript
   Copy CodeCopied
   // Bad
   \(</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'.btn'</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">on</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'click'</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(0, 0, 255);">function</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">\)(’.panel’).toggle(); });
   
   // Good
   const \(btn </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">\)(’.btn’);
   const \(panel </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">\)(’.panel’);
   \(btn</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">on</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'click'</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">=></span><span> \)panel.toggle());
   

2. Use event delegation
   • Attach events to a stable ancestor for dynamic content:

   javascript
   Copy CodeCopied
   \(</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'#list'</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">on</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'click'</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(163, 21, 21);">'.item'</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(0, 0, 255);">function</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span class="token" style="color: rgb(0, 128, 0); font-style: italic;">/handler */</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">}</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span></code></div></div></pre> </li> <li><strong>Prefer data attributes for state</strong> <ul> <li>Store UI state in data- attributes rather than global vars:</li> </ul> <pre><div class="XG2rBS5V967VhGTCEN1k"><div class="nHykNMmtaaTJMjgzStID"><div class="HsT0RHFbNELC00WicOi8"><i><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M15.434 7.51c.137.137.212.311.212.49a.694.694 0 0 1-.212.5l-3.54 3.5a.893.893 0 0 1-.277.18 1.024 1.024 0 0 1-.684.038.945.945 0 0 1-.302-.148.787.787 0 0 1-.213-.234.652.652 0 0 1-.045-.58.74.74 0 0 1 .175-.256l3.045-3-3.045-3a.69.69 0 0 1-.22-.55.723.723 0 0 1 .303-.52 1 1 0 0 1 .648-.186.962.962 0 0 1 .614.256l3.541 3.51Zm-12.281 0A.695.695 0 0 0 2.94 8a.694.694 0 0 0 .213.5l3.54 3.5a.893.893 0 0 0 .277.18 1.024 1.024 0 0 0 .684.038.945.945 0 0 0 .302-.148.788.788 0 0 0 .213-.234.651.651 0 0 0 .045-.58.74.74 0 0 0-.175-.256L4.994 8l3.045-3a.69.69 0 0 0 .22-.55.723.723 0 0 0-.303-.52 1 1 0 0 0-.648-.186.962.962 0 0 0-.615.256l-3.54 3.51Z"></path></svg></i><p class="li3asHIMe05JPmtJCytG wZ4JdaHxSAhGy1HoNVja cPy9QU4brI7VQXFNPEvF">html</p></div><div class="CF2lgtGWtYUYmTULoX44"><button type="button" class="st68fcLUUT0dNcuLLB2_ ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf" data-copycode="true" role="button" aria-label="Copy Code"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M9.975 1h.09a3.2 3.2 0 0 1 3.202 3.201v1.924a.754.754 0 0 1-.017.16l1.23 1.353A2 2 0 0 1 15 8.983V14a2 2 0 0 1-2 2H8a2 2 0 0 1-1.733-1H4.183a3.201 3.201 0 0 1-3.2-3.201V4.201a3.2 3.2 0 0 1 3.04-3.197A1.25 1.25 0 0 1 5.25 0h3.5c.604 0 1.109.43 1.225 1ZM4.249 2.5h-.066a1.7 1.7 0 0 0-1.7 1.701v7.598c0 .94.761 1.701 1.7 1.701H6V7a2 2 0 0 1 2-2h3.197c.195 0 .387.028.57.083v-.882A1.7 1.7 0 0 0 10.066 2.5H9.75c-.228.304-.591.5-1 .5h-3.5c-.41 0-.772-.196-1-.5ZM5 1.75v-.5A.25.25 0 0 1 5.25 1h3.5a.25.25 0 0 1 .25.25v.5a.25.25 0 0 1-.25.25h-3.5A.25.25 0 0 1 5 1.75ZM7.5 7a.5.5 0 0 1 .5-.5h3V9a1 1 0 0 0 1 1h1.5v4a.5.5 0 0 1-.5.5H8a.5.5 0 0 1-.5-.5V7Zm6 2v-.017a.5.5 0 0 0-.13-.336L12 7.14V9h1.5Z"></path></svg>Copy Code</button><button type="button" class="st68fcLUUT0dNcuLLB2_ WtfzoAXPoZC2mMqcexgL ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ GnLX_jUB3Jn3idluie7R"><svg fill="none" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" d="M20.618 4.214a1 1 0 0 1 .168 1.404l-11 14a1 1 0 0 1-1.554.022l-5-6a1 1 0 0 1 1.536-1.28l4.21 5.05L19.213 4.382a1 1 0 0 1 1.404-.168Z" clip-rule="evenodd"></path></svg>Copied</button></div></div><div class="mtDfw7oSa1WexjXyzs9y" style="color: var(--sds-color-text-01); font-family: var(--sds-font-family-monospace); direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: var(--sds-font-size-label); line-height: 1.2em; tab-size: 4; hyphens: none; padding: var(--sds-space-x02, 8px) var(--sds-space-x04, 16px) var(--sds-space-x04, 16px); margin: 0px; overflow: auto; border: none; background: transparent;"><code class="language-html" style="color: rgb(57, 58, 52); font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: 0.9em; line-height: 1.2em; tab-size: 4; hyphens: none;"><span class="token" style="color: rgb(57, 58, 52);"><</span><span class="token" style="color: rgb(128, 0, 0);">button</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">data-open</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">false</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">id</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">menuToggle</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(57, 58, 52);">></span><span>Menu</span><span class="token" style="color: rgb(57, 58, 52);"></</span><span class="token" style="color: rgb(128, 0, 0);">button</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span></code></div></div></pre> <pre><div class="XG2rBS5V967VhGTCEN1k"><div class="nHykNMmtaaTJMjgzStID"><div class="HsT0RHFbNELC00WicOi8"><i><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M15.434 7.51c.137.137.212.311.212.49a.694.694 0 0 1-.212.5l-3.54 3.5a.893.893 0 0 1-.277.18 1.024 1.024 0 0 1-.684.038.945.945 0 0 1-.302-.148.787.787 0 0 1-.213-.234.652.652 0 0 1-.045-.58.74.74 0 0 1 .175-.256l3.045-3-3.045-3a.69.69 0 0 1-.22-.55.723.723 0 0 1 .303-.52 1 1 0 0 1 .648-.186.962.962 0 0 1 .614.256l3.541 3.51Zm-12.281 0A.695.695 0 0 0 2.94 8a.694.694 0 0 0 .213.5l3.54 3.5a.893.893 0 0 0 .277.18 1.024 1.024 0 0 0 .684.038.945.945 0 0 0 .302-.148.788.788 0 0 0 .213-.234.651.651 0 0 0 .045-.58.74.74 0 0 0-.175-.256L4.994 8l3.045-3a.69.69 0 0 0 .22-.55.723.723 0 0 0-.303-.52 1 1 0 0 0-.648-.186.962.962 0 0 0-.615.256l-3.54 3.51Z"></path></svg></i><p class="li3asHIMe05JPmtJCytG wZ4JdaHxSAhGy1HoNVja cPy9QU4brI7VQXFNPEvF">javascript</p></div><div class="CF2lgtGWtYUYmTULoX44"><button type="button" class="st68fcLUUT0dNcuLLB2_ ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf" data-copycode="true" role="button" aria-label="Copy Code"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M9.975 1h.09a3.2 3.2 0 0 1 3.202 3.201v1.924a.754.754 0 0 1-.017.16l1.23 1.353A2 2 0 0 1 15 8.983V14a2 2 0 0 1-2 2H8a2 2 0 0 1-1.733-1H4.183a3.201 3.201 0 0 1-3.2-3.201V4.201a3.2 3.2 0 0 1 3.04-3.197A1.25 1.25 0 0 1 5.25 0h3.5c.604 0 1.109.43 1.225 1ZM4.249 2.5h-.066a1.7 1.7 0 0 0-1.7 1.701v7.598c0 .94.761 1.701 1.7 1.701H6V7a2 2 0 0 1 2-2h3.197c.195 0 .387.028.57.083v-.882A1.7 1.7 0 0 0 10.066 2.5H9.75c-.228.304-.591.5-1 .5h-3.5c-.41 0-.772-.196-1-.5ZM5 1.75v-.5A.25.25 0 0 1 5.25 1h3.5a.25.25 0 0 1 .25.25v.5a.25.25 0 0 1-.25.25h-3.5A.25.25 0 0 1 5 1.75ZM7.5 7a.5.5 0 0 1 .5-.5h3V9a1 1 0 0 0 1 1h1.5v4a.5.5 0 0 1-.5.5H8a.5.5 0 0 1-.5-.5V7Zm6 2v-.017a.5.5 0 0 0-.13-.336L12 7.14V9h1.5Z"></path></svg>Copy Code</button><button type="button" class="st68fcLUUT0dNcuLLB2_ WtfzoAXPoZC2mMqcexgL ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ GnLX_jUB3Jn3idluie7R"><svg fill="none" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" d="M20.618 4.214a1 1 0 0 1 .168 1.404l-11 14a1 1 0 0 1-1.554.022l-5-6a1 1 0 0 1 1.536-1.28l4.21 5.05L19.213 4.382a1 1 0 0 1 1.404-.168Z" clip-rule="evenodd"></path></svg>Copied</button></div></div><div class="mtDfw7oSa1WexjXyzs9y" style="color: var(--sds-color-text-01); font-family: var(--sds-font-family-monospace); direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: var(--sds-font-size-label); line-height: 1.2em; tab-size: 4; hyphens: none; padding: var(--sds-space-x02, 8px) var(--sds-space-x04, 16px) var(--sds-space-x04, 16px); margin: 0px; overflow: auto; border: none; background: transparent;"><code class="language-javascript" style="color: rgb(57, 58, 52); font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: 0.9em; line-height: 1.2em; tab-size: 4; hyphens: none;"><span class="token" style="color: rgb(57, 58, 52);">\)(’#menuToggle’).on(‘click’, function() {
     const \(</span><span class="token" style="color: rgb(0, 0, 255);">this</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">\)(this);
     const open = \(</span><span class="token" style="color: rgb(0, 0, 255);">this</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">data</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'open'</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>  \)this.data(‘open’, !open);
     \(</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'#menu'</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">toggle</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(57, 58, 52);">!</span><span>open</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span></span><span class="token" style="color: rgb(57, 58, 52);">}</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span></code></div></div></pre> </li> <li><strong>Throttle expensive handlers</strong> <ul> <li>Avoid firing handlers too often (resize/scroll/input):</li> </ul> <pre><div class="XG2rBS5V967VhGTCEN1k"><div class="nHykNMmtaaTJMjgzStID"><div class="HsT0RHFbNELC00WicOi8"><i><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M15.434 7.51c.137.137.212.311.212.49a.694.694 0 0 1-.212.5l-3.54 3.5a.893.893 0 0 1-.277.18 1.024 1.024 0 0 1-.684.038.945.945 0 0 1-.302-.148.787.787 0 0 1-.213-.234.652.652 0 0 1-.045-.58.74.74 0 0 1 .175-.256l3.045-3-3.045-3a.69.69 0 0 1-.22-.55.723.723 0 0 1 .303-.52 1 1 0 0 1 .648-.186.962.962 0 0 1 .614.256l3.541 3.51Zm-12.281 0A.695.695 0 0 0 2.94 8a.694.694 0 0 0 .213.5l3.54 3.5a.893.893 0 0 0 .277.18 1.024 1.024 0 0 0 .684.038.945.945 0 0 0 .302-.148.788.788 0 0 0 .213-.234.651.651 0 0 0 .045-.58.74.74 0 0 0-.175-.256L4.994 8l3.045-3a.69.69 0 0 0 .22-.55.723.723 0 0 0-.303-.52 1 1 0 0 0-.648-.186.962.962 0 0 0-.615.256l-3.54 3.51Z"></path></svg></i><p class="li3asHIMe05JPmtJCytG wZ4JdaHxSAhGy1HoNVja cPy9QU4brI7VQXFNPEvF">javascript</p></div><div class="CF2lgtGWtYUYmTULoX44"><button type="button" class="st68fcLUUT0dNcuLLB2_ ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf" data-copycode="true" role="button" aria-label="Copy Code"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M9.975 1h.09a3.2 3.2 0 0 1 3.202 3.201v1.924a.754.754 0 0 1-.017.16l1.23 1.353A2 2 0 0 1 15 8.983V14a2 2 0 0 1-2 2H8a2 2 0 0 1-1.733-1H4.183a3.201 3.201 0 0 1-3.2-3.201V4.201a3.2 3.2 0 0 1 3.04-3.197A1.25 1.25 0 0 1 5.25 0h3.5c.604 0 1.109.43 1.225 1ZM4.249 2.5h-.066a1.7 1.7 0 0 0-1.7 1.701v7.598c0 .94.761 1.701 1.7 1.701H6V7a2 2 0 0 1 2-2h3.197c.195 0 .387.028.57.083v-.882A1.7 1.7 0 0 0 10.066 2.5H9.75c-.228.304-.591.5-1 .5h-3.5c-.41 0-.772-.196-1-.5ZM5 1.75v-.5A.25.25 0 0 1 5.25 1h3.5a.25.25 0 0 1 .25.25v.5a.25.25 0 0 1-.25.25h-3.5A.25.25 0 0 1 5 1.75ZM7.5 7a.5.5 0 0 1 .5-.5h3V9a1 1 0 0 0 1 1h1.5v4a.5.5 0 0 1-.5.5H8a.5.5 0 0 1-.5-.5V7Zm6 2v-.017a.5.5 0 0 0-.13-.336L12 7.14V9h1.5Z"></path></svg>Copy Code</button><button type="button" class="st68fcLUUT0dNcuLLB2_ WtfzoAXPoZC2mMqcexgL ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ GnLX_jUB3Jn3idluie7R"><svg fill="none" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" d="M20.618 4.214a1 1 0 0 1 .168 1.404l-11 14a1 1 0 0 1-1.554.022l-5-6a1 1 0 0 1 1.536-1.28l4.21 5.05L19.213 4.382a1 1 0 0 1 1.404-.168Z" clip-rule="evenodd"></path></svg>Copied</button></div></div><div class="mtDfw7oSa1WexjXyzs9y" style="color: var(--sds-color-text-01); font-family: var(--sds-font-family-monospace); direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: var(--sds-font-size-label); line-height: 1.2em; tab-size: 4; hyphens: none; padding: var(--sds-space-x02, 8px) var(--sds-space-x04, 16px) var(--sds-space-x04, 16px); margin: 0px; overflow: auto; border: none; background: transparent;"><code class="language-javascript" style="color: rgb(57, 58, 52); font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: 0.9em; line-height: 1.2em; tab-size: 4; hyphens: none;"><span class="token" style="color: rgb(0, 0, 255);">function</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">throttle</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token parameter">fn</span><span class="token parameter" style="color: rgb(57, 58, 52);">,</span><span class="token parameter"> wait</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span class="token" style="color: rgb(0, 128, 0); font-style: italic;">/* simple throttle */</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">}</span><span> </span><span></span><span class="token" style="color: rgb(57, 58, 52);">\)(window).on(‘scroll’, throttle(() => { /* work / }, 100));
   

3. Graceful degradation / progressive enhancement
   • Ensure core functionality works without JS; jQuery should enhance UX, not be required for basics.

javascript
Copy CodeCopied
const MyWidget = (function($){
  function init(selector, opts){ / … / }
  return { init };
})(jQuery);

MyWidget.init(’#widget’);

javascript
Copy CodeCopied
$(document).on(‘cart:updated’, function(e, data){ / update UI / });
\(</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>document</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">trigger</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'cart:updated'</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">[</span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span class="token literal-property" style="color: rgb(255, 0, 0);">total</span><span class="token" style="color: rgb(57, 58, 52);">:</span><span> </span><span class="token" style="color: rgb(54, 172, 170);">3</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">}</span><span class="token" style="color: rgb(57, 58, 52);">]</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span></code></div></div></pre> <h4>Component initialization on DOM ready and mutation</h4> <ul> <li>Initialize on page load and for dynamically injected nodes:</li> </ul> <pre><div class="XG2rBS5V967VhGTCEN1k"><div class="nHykNMmtaaTJMjgzStID"><div class="HsT0RHFbNELC00WicOi8"><i><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M15.434 7.51c.137.137.212.311.212.49a.694.694 0 0 1-.212.5l-3.54 3.5a.893.893 0 0 1-.277.18 1.024 1.024 0 0 1-.684.038.945.945 0 0 1-.302-.148.787.787 0 0 1-.213-.234.652.652 0 0 1-.045-.58.74.74 0 0 1 .175-.256l3.045-3-3.045-3a.69.69 0 0 1-.22-.55.723.723 0 0 1 .303-.52 1 1 0 0 1 .648-.186.962.962 0 0 1 .614.256l3.541 3.51Zm-12.281 0A.695.695 0 0 0 2.94 8a.694.694 0 0 0 .213.5l3.54 3.5a.893.893 0 0 0 .277.18 1.024 1.024 0 0 0 .684.038.945.945 0 0 0 .302-.148.788.788 0 0 0 .213-.234.651.651 0 0 0 .045-.58.74.74 0 0 0-.175-.256L4.994 8l3.045-3a.69.69 0 0 0 .22-.55.723.723 0 0 0-.303-.52 1 1 0 0 0-.648-.186.962.962 0 0 0-.615.256l-3.54 3.51Z"></path></svg></i><p class="li3asHIMe05JPmtJCytG wZ4JdaHxSAhGy1HoNVja cPy9QU4brI7VQXFNPEvF">javascript</p></div><div class="CF2lgtGWtYUYmTULoX44"><button type="button" class="st68fcLUUT0dNcuLLB2_ ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf" data-copycode="true" role="button" aria-label="Copy Code"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M9.975 1h.09a3.2 3.2 0 0 1 3.202 3.201v1.924a.754.754 0 0 1-.017.16l1.23 1.353A2 2 0 0 1 15 8.983V14a2 2 0 0 1-2 2H8a2 2 0 0 1-1.733-1H4.183a3.201 3.201 0 0 1-3.2-3.201V4.201a3.2 3.2 0 0 1 3.04-3.197A1.25 1.25 0 0 1 5.25 0h3.5c.604 0 1.109.43 1.225 1ZM4.249 2.5h-.066a1.7 1.7 0 0 0-1.7 1.701v7.598c0 .94.761 1.701 1.7 1.701H6V7a2 2 0 0 1 2-2h3.197c.195 0 .387.028.57.083v-.882A1.7 1.7 0 0 0 10.066 2.5H9.75c-.228.304-.591.5-1 .5h-3.5c-.41 0-.772-.196-1-.5ZM5 1.75v-.5A.25.25 0 0 1 5.25 1h3.5a.25.25 0 0 1 .25.25v.5a.25.25 0 0 1-.25.25h-3.5A.25.25 0 0 1 5 1.75ZM7.5 7a.5.5 0 0 1 .5-.5h3V9a1 1 0 0 0 1 1h1.5v4a.5.5 0 0 1-.5.5H8a.5.5 0 0 1-.5-.5V7Zm6 2v-.017a.5.5 0 0 0-.13-.336L12 7.14V9h1.5Z"></path></svg>Copy Code</button><button type="button" class="st68fcLUUT0dNcuLLB2_ WtfzoAXPoZC2mMqcexgL ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ GnLX_jUB3Jn3idluie7R"><svg fill="none" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" d="M20.618 4.214a1 1 0 0 1 .168 1.404l-11 14a1 1 0 0 1-1.554.022l-5-6a1 1 0 0 1 1.536-1.28l4.21 5.05L19.213 4.382a1 1 0 0 1 1.404-.168Z" clip-rule="evenodd"></path></svg>Copied</button></div></div><div class="mtDfw7oSa1WexjXyzs9y" style="color: var(--sds-color-text-01); font-family: var(--sds-font-family-monospace); direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: var(--sds-font-size-label); line-height: 1.2em; tab-size: 4; hyphens: none; padding: var(--sds-space-x02, 8px) var(--sds-space-x04, 16px) var(--sds-space-x04, 16px); margin: 0px; overflow: auto; border: none; background: transparent;"><code class="language-javascript" style="color: rgb(57, 58, 52); font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: 0.9em; line-height: 1.2em; tab-size: 4; hyphens: none;"><span class="token" style="color: rgb(0, 0, 255);">function</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">initWidgets</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token parameter">root </span><span class="token parameter" style="color: rgb(57, 58, 52);">=</span><span class="token parameter"> document</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span>  </span><span class="token" style="color: rgb(57, 58, 52);">\)(root).find(’.js-widget’).each(function(){ / init */ });
}
\(</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>initWidgets</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span></span><span class="token" style="color: rgb(0, 0, 255);">new</span><span> </span><span class="token" style="color: rgb(43, 145, 175);">MutationObserver</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token parameter">mutations</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">=></span><span> </span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span>  mutations</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">forEach</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token parameter">m</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">=></span><span> </span><span class="token" style="color: rgb(57, 58, 52);">initWidgets</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>m</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>addedNodes</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span></span><span class="token" style="color: rgb(57, 58, 52);">}</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">observe</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span>document</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span>body</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">{</span><span> </span><span class="token literal-property" style="color: rgb(255, 0, 0);">childList</span><span class="token" style="color: rgb(57, 58, 52);">:</span><span> </span><span class="token" style="color: rgb(54, 172, 170);">true</span><span class="token" style="color: rgb(57, 58, 52);">,</span><span> </span><span class="token literal-property" style="color: rgb(255, 0, 0);">subtree</span><span class="token" style="color: rgb(57, 58, 52);">:</span><span> </span><span class="token" style="color: rgb(54, 172, 170);">true</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">}</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span></code></div></div></pre> <h3>Performance considerations</h3> <ul> <li>Batch DOM writes and reads to avoid layout thrashing.</li> <li>Use CSS transitions for animations when possible; toggle classes instead of manipulating style properties directly.</li> <li>Limit selector scope (use IDs or cached containers).</li> </ul> <h3>Accessibility and UX best practices</h3> <ul> <li>Keep keyboard navigation and focus management in mind (use tabindex, ARIA roles where necessary).</li> <li>Announce dynamic changes to screen readers via ARIA live regions.</li> <li>Ensure interactive elements are reachable and usable on touch devices.</li> </ul> <h3>Debugging and testing tips</h3> <ul> <li>Use the browser devtools to profile repaint/reflow costs.</li> <li>Write small unit tests for critical UI logic; mock jQuery selectors where useful.</li> <li>Log and handle AJAX errors; provide user-friendly fallback messages.</li> </ul> <h3>Example: Simple Tab Component</h3> <pre><div class="XG2rBS5V967VhGTCEN1k"><div class="nHykNMmtaaTJMjgzStID"><div class="HsT0RHFbNELC00WicOi8"><i><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M15.434 7.51c.137.137.212.311.212.49a.694.694 0 0 1-.212.5l-3.54 3.5a.893.893 0 0 1-.277.18 1.024 1.024 0 0 1-.684.038.945.945 0 0 1-.302-.148.787.787 0 0 1-.213-.234.652.652 0 0 1-.045-.58.74.74 0 0 1 .175-.256l3.045-3-3.045-3a.69.69 0 0 1-.22-.55.723.723 0 0 1 .303-.52 1 1 0 0 1 .648-.186.962.962 0 0 1 .614.256l3.541 3.51Zm-12.281 0A.695.695 0 0 0 2.94 8a.694.694 0 0 0 .213.5l3.54 3.5a.893.893 0 0 0 .277.18 1.024 1.024 0 0 0 .684.038.945.945 0 0 0 .302-.148.788.788 0 0 0 .213-.234.651.651 0 0 0 .045-.58.74.74 0 0 0-.175-.256L4.994 8l3.045-3a.69.69 0 0 0 .22-.55.723.723 0 0 0-.303-.52 1 1 0 0 0-.648-.186.962.962 0 0 0-.615.256l-3.54 3.51Z"></path></svg></i><p class="li3asHIMe05JPmtJCytG wZ4JdaHxSAhGy1HoNVja cPy9QU4brI7VQXFNPEvF">html</p></div><div class="CF2lgtGWtYUYmTULoX44"><button type="button" class="st68fcLUUT0dNcuLLB2_ ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf" data-copycode="true" role="button" aria-label="Copy Code"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M9.975 1h.09a3.2 3.2 0 0 1 3.202 3.201v1.924a.754.754 0 0 1-.017.16l1.23 1.353A2 2 0 0 1 15 8.983V14a2 2 0 0 1-2 2H8a2 2 0 0 1-1.733-1H4.183a3.201 3.201 0 0 1-3.2-3.201V4.201a3.2 3.2 0 0 1 3.04-3.197A1.25 1.25 0 0 1 5.25 0h3.5c.604 0 1.109.43 1.225 1ZM4.249 2.5h-.066a1.7 1.7 0 0 0-1.7 1.701v7.598c0 .94.761 1.701 1.7 1.701H6V7a2 2 0 0 1 2-2h3.197c.195 0 .387.028.57.083v-.882A1.7 1.7 0 0 0 10.066 2.5H9.75c-.228.304-.591.5-1 .5h-3.5c-.41 0-.772-.196-1-.5ZM5 1.75v-.5A.25.25 0 0 1 5.25 1h3.5a.25.25 0 0 1 .25.25v.5a.25.25 0 0 1-.25.25h-3.5A.25.25 0 0 1 5 1.75ZM7.5 7a.5.5 0 0 1 .5-.5h3V9a1 1 0 0 0 1 1h1.5v4a.5.5 0 0 1-.5.5H8a.5.5 0 0 1-.5-.5V7Zm6 2v-.017a.5.5 0 0 0-.13-.336L12 7.14V9h1.5Z"></path></svg>Copy Code</button><button type="button" class="st68fcLUUT0dNcuLLB2_ WtfzoAXPoZC2mMqcexgL ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ GnLX_jUB3Jn3idluie7R"><svg fill="none" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" d="M20.618 4.214a1 1 0 0 1 .168 1.404l-11 14a1 1 0 0 1-1.554.022l-5-6a1 1 0 0 1 1.536-1.28l4.21 5.05L19.213 4.382a1 1 0 0 1 1.404-.168Z" clip-rule="evenodd"></path></svg>Copied</button></div></div><div class="mtDfw7oSa1WexjXyzs9y" style="color: var(--sds-color-text-01); font-family: var(--sds-font-family-monospace); direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: var(--sds-font-size-label); line-height: 1.2em; tab-size: 4; hyphens: none; padding: var(--sds-space-x02, 8px) var(--sds-space-x04, 16px) var(--sds-space-x04, 16px); margin: 0px; overflow: auto; border: none; background: transparent;"><code class="language-html" style="color: rgb(57, 58, 52); font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: 0.9em; line-height: 1.2em; tab-size: 4; hyphens: none;"><span class="token" style="color: rgb(57, 58, 52);"><</span><span class="token" style="color: rgb(128, 0, 0);">div</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">class</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">tabs</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span><span>  </span><span class="token" style="color: rgb(57, 58, 52);"><</span><span class="token" style="color: rgb(128, 0, 0);">button</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">class</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">tab</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">data-target</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">#p1</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(57, 58, 52);">></span><span>One</span><span class="token" style="color: rgb(57, 58, 52);"></</span><span class="token" style="color: rgb(128, 0, 0);">button</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span><span>  </span><span class="token" style="color: rgb(57, 58, 52);"><</span><span class="token" style="color: rgb(128, 0, 0);">button</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">class</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">tab</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">data-target</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">#p2</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(57, 58, 52);">></span><span>Two</span><span class="token" style="color: rgb(57, 58, 52);"></</span><span class="token" style="color: rgb(128, 0, 0);">button</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span><span>  </span><span class="token" style="color: rgb(57, 58, 52);"><</span><span class="token" style="color: rgb(128, 0, 0);">div</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">id</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">p1</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">class</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">panel</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(57, 58, 52);">></span><span>Content 1</span><span class="token" style="color: rgb(57, 58, 52);"></</span><span class="token" style="color: rgb(128, 0, 0);">div</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span><span>  </span><span class="token" style="color: rgb(57, 58, 52);"><</span><span class="token" style="color: rgb(128, 0, 0);">div</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">id</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">p2</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">class</span><span class="token attr-equals" style="color: rgb(57, 58, 52);">=</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(0, 0, 255);">panel</span><span class="token" style="color: rgb(57, 58, 52);">"</span><span class="token" style="color: rgb(128, 0, 0);"> </span><span class="token" style="color: rgb(255, 0, 0);">hidden</span><span class="token" style="color: rgb(57, 58, 52);">></span><span>Content 2</span><span class="token" style="color: rgb(57, 58, 52);"></</span><span class="token" style="color: rgb(128, 0, 0);">div</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span><span></span><span class="token" style="color: rgb(57, 58, 52);"></</span><span class="token" style="color: rgb(128, 0, 0);">div</span><span class="token" style="color: rgb(57, 58, 52);">></span><span> </span></code></div></div></pre> <pre><div class="XG2rBS5V967VhGTCEN1k"><div class="nHykNMmtaaTJMjgzStID"><div class="HsT0RHFbNELC00WicOi8"><i><svg width="16" height="16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M15.434 7.51c.137.137.212.311.212.49a.694.694 0 0 1-.212.5l-3.54 3.5a.893.893 0 0 1-.277.18 1.024 1.024 0 0 1-.684.038.945.945 0 0 1-.302-.148.787.787 0 0 1-.213-.234.652.652 0 0 1-.045-.58.74.74 0 0 1 .175-.256l3.045-3-3.045-3a.69.69 0 0 1-.22-.55.723.723 0 0 1 .303-.52 1 1 0 0 1 .648-.186.962.962 0 0 1 .614.256l3.541 3.51Zm-12.281 0A.695.695 0 0 0 2.94 8a.694.694 0 0 0 .213.5l3.54 3.5a.893.893 0 0 0 .277.18 1.024 1.024 0 0 0 .684.038.945.945 0 0 0 .302-.148.788.788 0 0 0 .213-.234.651.651 0 0 0 .045-.58.74.74 0 0 0-.175-.256L4.994 8l3.045-3a.69.69 0 0 0 .22-.55.723.723 0 0 0-.303-.52 1 1 0 0 0-.648-.186.962.962 0 0 0-.615.256l-3.54 3.51Z"></path></svg></i><p class="li3asHIMe05JPmtJCytG wZ4JdaHxSAhGy1HoNVja cPy9QU4brI7VQXFNPEvF">javascript</p></div><div class="CF2lgtGWtYUYmTULoX44"><button type="button" class="st68fcLUUT0dNcuLLB2_ ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ CPXAhl7VTkj2dHDyAYAf" data-copycode="true" role="button" aria-label="Copy Code"><svg viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" clip-rule="evenodd" d="M9.975 1h.09a3.2 3.2 0 0 1 3.202 3.201v1.924a.754.754 0 0 1-.017.16l1.23 1.353A2 2 0 0 1 15 8.983V14a2 2 0 0 1-2 2H8a2 2 0 0 1-1.733-1H4.183a3.201 3.201 0 0 1-3.2-3.201V4.201a3.2 3.2 0 0 1 3.04-3.197A1.25 1.25 0 0 1 5.25 0h3.5c.604 0 1.109.43 1.225 1ZM4.249 2.5h-.066a1.7 1.7 0 0 0-1.7 1.701v7.598c0 .94.761 1.701 1.7 1.701H6V7a2 2 0 0 1 2-2h3.197c.195 0 .387.028.57.083v-.882A1.7 1.7 0 0 0 10.066 2.5H9.75c-.228.304-.591.5-1 .5h-3.5c-.41 0-.772-.196-1-.5ZM5 1.75v-.5A.25.25 0 0 1 5.25 1h3.5a.25.25 0 0 1 .25.25v.5a.25.25 0 0 1-.25.25h-3.5A.25.25 0 0 1 5 1.75ZM7.5 7a.5.5 0 0 1 .5-.5h3V9a1 1 0 0 0 1 1h1.5v4a.5.5 0 0 1-.5.5H8a.5.5 0 0 1-.5-.5V7Zm6 2v-.017a.5.5 0 0 0-.13-.336L12 7.14V9h1.5Z"></path></svg>Copy Code</button><button type="button" class="st68fcLUUT0dNcuLLB2_ WtfzoAXPoZC2mMqcexgL ffON2NH02oMAcqyoh2UU MQCbz04ET5EljRmK3YpQ GnLX_jUB3Jn3idluie7R"><svg fill="none" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path fill="currentColor" fill-rule="evenodd" d="M20.618 4.214a1 1 0 0 1 .168 1.404l-11 14a1 1 0 0 1-1.554.022l-5-6a1 1 0 0 1 1.536-1.28l4.21 5.05L19.213 4.382a1 1 0 0 1 1.404-.168Z" clip-rule="evenodd"></path></svg>Copied</button></div></div><div class="mtDfw7oSa1WexjXyzs9y" style="color: var(--sds-color-text-01); font-family: var(--sds-font-family-monospace); direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: var(--sds-font-size-label); line-height: 1.2em; tab-size: 4; hyphens: none; padding: var(--sds-space-x02, 8px) var(--sds-space-x04, 16px) var(--sds-space-x04, 16px); margin: 0px; overflow: auto; border: none; background: transparent;"><code class="language-javascript" style="color: rgb(57, 58, 52); font-family: Consolas, "Bitstream Vera Sans Mono", "Courier New", Courier, monospace; direction: ltr; text-align: left; white-space: pre; word-spacing: normal; word-break: normal; font-size: 0.9em; line-height: 1.2em; tab-size: 4; hyphens: none;"><span class="token" style="color: rgb(57, 58, 52);">\)(’.tabs’).on(‘click’, ’.tab’, function(){
  const \(t </span><span class="token" style="color: rgb(57, 58, 52);">=</span><span> </span><span class="token" style="color: rgb(57, 58, 52);">\)(this);
  const target = \(t</span><span class="token" style="color: rgb(57, 58, 52);">.</span><span class="token" style="color: rgb(57, 58, 52);">data</span><span class="token" style="color: rgb(57, 58, 52);">(</span><span class="token" style="color: rgb(163, 21, 21);">'target'</span><span class="token" style="color: rgb(57, 58, 52);">)</span><span class="token" style="color: rgb(57, 58, 52);">;</span><span> </span><span>  \)t.addClass(‘is-active’).siblings().removeClass(‘is-active’);
  $(target).show().siblings(’.panel’).hide();
});

When to migrate away from jQuery

• For new greenfield projects targeting modern browsers, consider native DOM APIs, frameworks (React/Vue/Svelte), or small utility libraries. Migrate when jQuery adds significant bundle size or impedes reactive architecture.

Conclusion

• jQuery remains practical for many projects—use caching, delegation, modular patterns, and proven plugins to build interactive, accessible UIs efficiently. Follow performance and accessibility best practices, and plan migration only when maintenance or architecture demands it.