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GetElementById
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GetElementById is a method of the <code>Document</code> object in the Document Object Model. It is commonly used in JavaScript programming to refer to an HTML element for processing. Specifically, it returns a reference to an object that represents an element on the page, in the case of an HTML document, or a node, in the case of an XML document. The element can then be examined or manipulated through this object. Examples <source lang="HTML5"> <input type="text" size="10" name="phone_number" id="phone_number" /> <script type="text/javascript"> var phone = document.getElementById('phone_number'); </script> </source> If there is no element with the given ID, it returns null. The behavior of <code>getElementById</code> is undefined if more than one element has this ID, although in practice some web browsers return the first element with the given ID. |
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