I am trying to run some code when the browser back button is clicked.
How can i found out browser's back button with out changing the browser history?
I tried the code below. I got an exception in the else
block saying: "event is not defined".
window.onunload = HandleBackFunctionality(); function HandleBackFunctionality() { if(window.event) { if(window.event.clientX < 40 && window.event.clientY < 0) { alert("Browser back button is clicked…"); } else { alert("Browser refresh button is clicked…"); } } else { if(event.currentTarget.performance.navigation.type == 1) { alert("Browser refresh button is clicked…"); } if(event.currentTarget.performance.navigation.type == 2) { alert("Browser back button is clicked…"); } } }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
use
$(window).on("navigate", function (event, data) {
var direction = data.state.direction;
if (direction == 'back') {
// do something
}
if (direction == 'forward') {
// do something else
}
});
Okay. Besides the fact that you should not initially trigger the event and to .unload = FunctionName
and not .unload=FunctionName()
and that you need to pass the event
-argument I checked the code in the browser.
currentTarget
is empty - this totally makes sense as there is no event-target like onclick but it is just the site reloading/unloading.
Please debug the code by yourself by using this and fit it to your needs: window.onunload = HandleBackFunctionality;
function HandleBackFunctionality(event)
{
console.log(event, window.event);
}
You will see that currentTarget is not set (while event is).
This is the only solution that works for me with IOS safari.
<script>
window.addEventListener( "pageshow", function ( event ) {
var pagehistory = event.persisted ||
( typeof window.performance != "undefined" &&
window.performance.navigation.type === 2 );
if ( pagehistory ) {
// back button event - Do whatever.
}
});
</script>
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