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JavaScript length Property
JavaScript Array Object
Definition and Usage
The length property sets or returns the number of elements in an array.
Syntax
array.length
Browser Support
The length property is supported in all major browsers.
Example
Example
Return and set the length of an array:
<script type="text/javascript">
var fruits = ["Banana", "Orange", "Apple", "Mango"];
document.write("Original length: " + fruits.length);
document.write("<br />");
fruits.length=5;
document.write("New length: " + fruits.length);
</script>
var fruits = ["Banana", "Orange", "Apple", "Mango"];
document.write("Original length: " + fruits.length);
document.write("<br />");
fruits.length=5;
document.write("New length: " + fruits.length);
</script>
The output of the code above will be:
Original length: 4
New length: 5
New length: 5
Try it yourself »
JavaScript Array 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.