JavaScript length Property
 JavaScript Array Object
Definition and Usage
The length property sets or returns the number of elements in an array.
Syntax
Example
Example
In this example we will show how to use the length property to both return
and set the length of an array:
<script type="text/javascript">
var arr = new Array(3);
arr[0] = "John";
arr[1] = "Andy";
arr[2] = "Wendy";
document.write("Original length: " + arr.length);
document.write("<br />");
arr.length=5;
document.write("New length: " + arr.length);
</script>
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The output of the code above will be:
Original length: 3
New length: 5
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Try it yourself »
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JavaScript Array Object
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