History length Property
 History Object
Definition and Usage
The length property returns the number of URLs in the history list.
Note: Internet Explorer and Opera start at 0, while Firefox, Chrome,
and Safari start at 1.
Syntax
Browser Support
The length property is supported in all major browsers.
Example
Example
Return the number of URLs in the history list:
<script type="text/javascript">
document.write("Number of URLs in history list: " + history.length);
</script>
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The output of the code above will be:
Try it yourself »
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History Object
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