jquery and passing global variables

Question

I have the following:

window.linkFrom;

$(document).ready(function(){

    $("a.linker").click(function(event){

            window.linkFrom = $(this).closest("div").attr("id");

            alert(window.linkFrom); 

            });

 });

and want to pass the var linkFrom to a different script on a second page:

window.linkFrom;

(document).ready(function(){    

            alert(window.linkFrom);

});

How do I make this work?

TIA.

clacke · Accepted Answer · 2010-07-30 14:12:57Z

2

The script environments of two different pages are entirely independent, so you cannot communicate over variables like this. Basically you have two choices:

Use cookies.
Modify the calls to the second page to add e.g. #linkFrom=asdf to the address and parse that in the js of the second page.

Clarifying edit: scripts -> script environments

edited Jul 30, 2010 at 14:12

answered Jul 30, 2010 at 5:38

clacke

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2 Comments

circey Over a year ago

Thanks Clacke. What if I were to use the first script on both pages. Would the variable save from page to page?

clacke Over a year ago

No, it doesn't matter. From one page load to another the scripting environment is reset, so you need to transfer the information through a side channel, like cookies or http fragments (the right-hand side of the #).

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