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<!DOCTYPE html>
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<title>set · WebPlatform Docs</title>
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<h1>set</h1>
<h2>Summary</h2>
<p>Sets a value or an array of values.</p>
<h2>Syntax</h2>
<pre><code>int8Array.set(index, value);
int8Array.set(array, offset);
</code></pre>
<dl>
<dt><strong>index</strong></dt>
<dd>The index of the location to set.
</dd>
<dt><strong>value</strong></dt>
<dd>The value to set.
</dd>
<dt><strong>array</strong></dt>
<dd>A typed or untyped array of values to set.
</dd>
<dt><strong>offset</strong></dt>
<dd>The index in the current array at which the values are to be written.
</dd>
</dl>
<h2>Examples</h2>
<p>The following example shows how to set the first element of the array.</p>
<pre><code class="js"><span class="hljs-keyword">var</span> req = <span class="hljs-keyword">new</span> XMLHttpRequest();
req.open(<span class="hljs-string">'GET'</span>, <span class="hljs-string">"http://www.example.com"</span>);
req.responseType = <span class="hljs-string">"arraybuffer"</span>;
req.send();
req.onreadystatechange = <span class="hljs-function"><span class="hljs-keyword">function</span> (<span class="hljs-params"></span>) </span>{
<span class="hljs-keyword">if</span> (req.readyState === <span class="hljs-number">4</span>) {
<span class="hljs-keyword">var</span> buffer = req.response;
<span class="hljs-keyword">var</span> dataView = <span class="hljs-keyword">new</span> <span class="hljs-built_in">DataView</span>(buffer);
<span class="hljs-keyword">var</span> intArr = <span class="hljs-keyword">new</span> <span class="hljs-built_in">Int16Array</span>(buffer.byteLength / <span class="hljs-number">2</span>);
intArr.set(<span class="hljs-number">0</span>, <span class="hljs-number">9</span>);
}
}
</code></pre>
<h2>Remarks</h2>
<p>If the input array is a TypedArray, the two arrays may use the same underlying ArrayBuffer. In this situation, setting the values takes place as if all the data is first copied into a temporary buffer that does not overlap either of the arrays, and then the data from the temporary buffer is copied into the current array.</p>
<p>If the offset plus the length of the given array is out of range for the current TypedArray, an exception is raised.</p>
<h2>Attributions</h2>
<ul>
<li><p>Microsoft Developer Network: <a href="http://msdn.microsoft.com/en-us/library/ie/br230743(v=vs.94).aspx">Article</a></p>
</li>
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