How to destroy variable when change URL (any browser) in JavaScript or Jquery

Question

Today use this Code but this code some time not properly work

Problem : Page refresh then call unload() but some time user change URL directly at that time not call unload() because website change...

So, How to solve it in all Browser. Please Help Me

<html>
    <head>
        <script type="text/JavaScript">
            function unload(){
                alert("My Page unLoad - Destroy Variable");
            }

            function load() {
                alert("My Page Load");
            }
        </script>
    </head>

    <body onLoad="load()">
        <script type="text/javascript">
            window.onbeforeunload = unload();
        </script>
    </body>
</html>

You don't need to destroy or null variables in Javascript. That already happens when the page changes. — Reinstate Monica Cellio
– Reinstate Monica Cellio, Commented Oct 2, 2016 at 8:11
Yes, You are Right. But I am use localStorage Variable So, not Destroy automatically... manually destroy it. — Kyada Nilesh
– Kyada Nilesh, Commented Oct 2, 2016 at 8:38
So you want to remove data from localStorage when you leave the page? It simply sounds like you should be using variables instead. If this isn't the case then you need to clearly explain what you're trying to do and what the problem is, rather than give us snippets until we finally get to the problem. — Reinstate Monica Cellio
– Reinstate Monica Cellio, Commented Oct 2, 2016 at 8:39
yes remove data from localStorage when you leave the page via url change.... — Kyada Nilesh
– Kyada Nilesh, Commented Oct 2, 2016 at 9:31

Community · Accepted Answer · 2017-05-23 10:34:08Z

2

HTTP is stateless, so on every new page the variables will begin in their uninitialised state, and all code set to run on load (ie. not in an event handler) will run.

If you are using localstorage:

Check this question on how to detect changes in the url: How to detect URL changes with jQuery

Then use this to destroy it:

 window.localStorage.removeItem(key);

edited May 23, 2017 at 10:34

CommunityBot

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answered Oct 2, 2016 at 8:14

Tristan

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2 Comments

Kyada Nilesh Over a year ago

But I am use localStorage Variable... So, not Destroy... manually destroy

Kyada Nilesh Over a year ago

URL change at that time not work this solution. this solution already use but not proper work.

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