devdocs/html/attributes%2Ffor.html


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<header><h1>HTML attribute: for</h1></header><div class="section-content"><p>The <code>for</code> attribute is an allowed attribute for <a href="../element/label"><code>&lt;label&gt;</code></a> and <a href="../element/output"><code>&lt;output&gt;</code></a>. When used on a <code>&lt;label&gt;</code> element it indicates the form element that this label describes. When used on an <code>&lt;output&gt;</code> element it allows for an explicit relationship between the elements that represent values which are used in the output.</p></div>
<h2 id="usage">Usage</h2>
<div class="section-content">
<p>When used as an attribute of <code>&lt;label&gt;</code>, the <code>for</code> attribute has a value which is the <code>id</code> of the form element it relates to.</p> <div class="code-example">
<p class="example-header"><span class="language-name">html</span></p>
<pre data-signature="k90DFR/sdhD7TkaAGdVvWQdQG3HU2AzS8of0F0qC6Jg=" data-language="html"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>label</span> <span class="token attr-name">for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>username<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>Your name<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>label</span><span class="token punctuation">&gt;</span></span> <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>text<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>username<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span>
</pre>
</div> <p>When used as an attribute of <code>&lt;output&gt;</code>, the <code>for</code> attribute has a value which is a space separated list of the <code>id</code> values of the elements which are used to create the output.</p> <div class="code-example">
<p class="example-header"><span class="language-name">html</span></p>
<pre data-signature="3QYBkr0U2S7ekr01qqTzYcFYMkyK0jMTQAncV7h+xwk=" data-language="html"><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>range<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>b<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>b<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>50<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span> +
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>number<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>a<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>a<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>10<span class="token punctuation">"</span></span> <span class="token punctuation">/&gt;</span></span> =
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>output</span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>result<span class="token punctuation">"</span></span> <span class="token attr-name">for</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>a b<span class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>60<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>output</span><span class="token punctuation">&gt;</span></span>
</pre>
</div>
</div>
<h2 id="examples">Examples</h2>
<div class="section-content"><p>See examples of usage on the element pages for <a href="../element/label"><code>&lt;label&gt;</code></a> and <a href="../element/output"><code>&lt;output&gt;</code></a>.</p></div>
<h2 id="specifications">Specifications</h2>
<div class="_table"><table class="standard-table">
<thead><tr><th scope="col">Specification</th></tr></thead>
<tbody>
<tr><td><a href="https://html.spec.whatwg.org/multipage/forms.html#attr-label-for">HTML Standard <br><small># attr-label-for</small></a></td></tr>
<tr><td><a href="https://html.spec.whatwg.org/multipage/form-elements.html#attr-output-for">HTML Standard <br><small># attr-output-for</small></a></td></tr>
</tbody>
</table></div>
<h2 id="browser_compatibility">Browser compatibility</h2>
<div class="_table"><table>
<thead>
<tr id="bct-browser-type">
<th></th>
<th colspan="6">Desktop</th>
<th colspan="6">Mobile</th>
</tr>
<tr id="bct-browsers">
<th></th>
<th>Chrome</th>
<th>Edge</th>
<th>Firefox</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
<th>WebView Android</th>
<th>Chrome Android</th>
<th>Firefox for Android</th>
<th>Opera Android</th>
<th>Safari on IOS</th>
<th>Samsung Internet</th>
</tr>
</thead>
<tbody><tr>
<th><code>for</code></th>
<td class="bc-supports-yes">10</td>
<td class="bc-supports-yes">≤18</td>
<td class="bc-supports-yes">4</td>
<td class="bc-supports-no">No</td>
<td class="bc-supports-yes">11</td>
<td class="bc-supports-yes">7</td>
<td class="bc-supports-yes">4.4</td>
<td class="bc-supports-yes">18</td>
<td class="bc-supports-yes">4</td>
<td class="bc-supports-yes">11</td>
<td class="bc-supports-yes">7</td>
<td class="bc-supports-yes">1.0</td>
</tr></tbody>
</table></div>
<div class="_table"><table>
<thead>
<tr id="bct-browser-type">
<th></th>
<th colspan="6">Desktop</th>
<th colspan="6">Mobile</th>
</tr>
<tr id="bct-browsers">
<th></th>
<th>Chrome</th>
<th>Edge</th>
<th>Firefox</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
<th>WebView Android</th>
<th>Chrome Android</th>
<th>Firefox for Android</th>
<th>Opera Android</th>
<th>Safari on IOS</th>
<th>Samsung Internet</th>
</tr>
</thead>
<tbody><tr>
<th><code>for</code></th>
<td class="bc-supports-yes">1</td>
<td class="bc-supports-yes">12</td>
<td class="bc-supports-yes">1</td>
<td class="bc-supports-yes">Yes</td>
<td class="bc-supports-yes">15</td>
<td class="bc-supports-yes">≤4</td>
<td class="bc-supports-yes">4.4</td>
<td class="bc-supports-yes">18</td>
<td class="bc-supports-yes">4</td>
<td class="bc-supports-yes">14</td>
<td class="bc-supports-yes">≤3.2</td>
<td class="bc-supports-yes">1.0</td>
</tr></tbody>
</table></div>
<h3 id="html.elements.label.for">html.elements.label.for</h3>
<p>BCD tables only load in the browser<noscript> with JavaScript enabled. Enable JavaScript to view data.</noscript></p>
<h3 id="html.elements.output.for">html.elements.output.for</h3>
<p>BCD tables only load in the browser<noscript> with JavaScript enabled. Enable JavaScript to view data.</noscript></p><div class="_attribution">
  <p class="_attribution-p">
    &copy; 2005&ndash;2023 MDN contributors.<br>Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.<br>
    <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/for" class="_attribution-link">https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/for</a>
  </p>
</div>