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JS & DOM Reference

Overview

JavaScript Objects

JS Array JS Boolean JS Date JS Math JS Number JS String JS RegExp JS Global

Browser Objects

Window Navigator Screen History Location

Core DOM Objects

DOM Node DOM NodeList DOM NamedNodeMap DOM Document DOM Element DOM Attr

HTML DOM Objects

DOM Document DOM Events DOM Elements
DOM Anchor DOM Area DOM Base DOM Body DOM Button DOM Form DOM Frame/IFrame DOM Frameset DOM Image DOM Input Button DOM Input Checkbox DOM Input File DOM Input Hidden DOM Input Password DOM Input Radio DOM Input Reset DOM Input Submit DOM Input Text DOM Link DOM Meta DOM Object DOM Option DOM Select DOM Style DOM Table DOM td / th DOM tr DOM Textarea

Document getElementsByTagName() Method

Document Object

Definition and Usage

The getElementsByTagName() method accesses all elements with the specified tagname.

Syntax

document.getElementsByTagName(tagname)

Parameter	Description
tagname	Required. The tagname of the element you want to access/manipulate

Browser Support

The getElementsByTagName() method is supported in all major browsers.

Example

<html>
<head>
<script>
function getElements()
  {
  var x=document.getElementsByTagName("input");
  alert(x.length);
  }
</script>
</head>
<body>

<input type="text" size="20"><br>
<input type="text" size="20"><br>
<input type="text" size="20"><br><br>
<input type="button" onclick="getElements()" value="How many input elements?">

</body>
</html>

Try it yourself »

Document Object