Menu
I have to do some kind of operation on the page refresh or reload. that is when I hit next page or Filter or refresh on the grid. I need to show some confirmation box over this Events.
is there any event which can tell you page is doing filer? refresh or paging? using javascript?
Thanks
362
On Refresh/Reload/F5: If user will refresh the page, first window. onbeforeunload will fire with IsRefresh value = "Close" and then window. onload will fire with IsRefresh value = "Load", so now you can determine at last that your page is refreshing.
Answer: Use the JavaScript location. reload() Method You can simply use the JavaScript location. reload() method to refresh or reloads the page. This method optionally accepts a Boolean parameter true or false . If the parameter true is specified, it causes the page to always be reloaded from the server.
Not sure about the back button, but as described in this StackOverflow post, you can use window. onbeforeunload to detect refresh (either F5, CTRL+R or the browser's button).
If it is refreshing, window.onunload will fire.
// From MDN
window.onunload = unloadPage;
function unloadPage()
{
alert("unload event detected!");
}
https://developer.mozilla.org/en/DOM/window.onunload
If you just want a confirmation box to allow them to stay, use this:
window.onbeforeunload = function() {
return "Are you sure you want to navigate away?";
}
You can create a hidden field and set its value on first page load. When the page is loaded again, you can check the hidden field. If it's empty then the page is loaded for the first time, else it's refreshed. Some thing like this:
HTML
<body onLoad="CheckPageLoad();">
<input type="hidden" name="visit" id="visit" value="" />
</body>
JS
function CheckPageLoad() {
if (document.getElementById("visit").value == "") {
// This is a fresh page load
document.getElementById("visit").value = "1";
}
else {
// This is a page refresh
}
}
There are some clarification notes on wrestling with this I think are critical.
First, the refresh/hidden field system works on the beginning of the new page copy and after, not on leaving the first page copy.
From my research of this method and a few others, there is no way, primarily due to privacy standards, to detect a refresh of a page during unload or earlier. only after the load of the new page and later.
I had a similar issue request, but basically it was terminate session on exit of page, and while looking through that, found that a browser treats a reload/refresh as two distinct pieces:
These happen in just that order as well. Only a custom or non standard browser will behave differently.
36
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
