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Select length Property
Select Object
Definition and Usage
The length property returns the number of options in a dropdown list.
Syntax
selectObject.length=number
Browser Support
The length property is supported in all major browsers.
Example
Example
Display the number of options in the dropdown list:
<html>
<head>
<script type="text/javascript">
function displayResult()
{
alert(document.getElementById("mySelect").length);
}
</script>
</head>
<body>
<form>
<select id="mySelect">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
</form>
<button type="button" onclick="displayResult()">How many options?</button>
</body>
</html>
<head>
<script type="text/javascript">
function displayResult()
{
alert(document.getElementById("mySelect").length);
}
</script>
</head>
<body>
<form>
<select id="mySelect">
<option>Apple</option>
<option>Pear</option>
<option>Banana</option>
<option>Orange</option>
</select>
</form>
<button type="button" onclick="displayResult()">How many options?</button>
</body>
</html>
Try it yourself »
Select Object
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Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.