HTML onhaschange Event Attribute
Description
The event attribute onhaschange
occurs when the anchor or hash part (starting with the # character) of the current URL changes.
An example of a hash part. Assuming we have the following URL: http://www.example.com/test.php#part3 , the hash part will be '#part3'.
To trigger the onhashchange event, you must:
- Change the anchor part by setting the location.hash or location.href property of the Location object in JavaScript.
- Go to another label of the current page (using the Back or Forward buttons).
- Click on the link leading to the anchor tag of the page.
Syntax
<element onhaschange="script">
Values
- scriptThe name of the script to use when the event has been triggered.
Example
<!DOCTYPE HTML>
<html>
<head>
</head>
<body onhashchange="myFunction()">
<p>Click on the button to change the anchor part of the current URL to #part7</p>
<button onclick="changePart()">Try it!</button>
<p id="demo"></p>
<script>
function changePart() {
location.hash = "part7";
var x = "Now the anchor part: " + location.hash;
document.getElementById("demo").innerHTML = x;
}
function myFunction() {
alert("EXAMPLE: The anchor part has changed!");
}
</script>
</body>
</html>
Supported Tags
Browser Support
Desktop | |||||
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Tablets / Mobile | |||||
![]() |
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