How to pass a variable from one frame to another frame in HTML

Question

Let's say I declared the variable var = 5; in frame1. Now how do I pass this variable to frame2? I'd like to pass it using a hyperlink. Are there any other ways to do that?

Also, how do I access that variable after passing to frame2 in frame2?

Older post [here](http://stackoverflow.com/questions/13042615/allowing-a-child-iframe-to-call-a-function-on-its-parent-window-from-a-different) might be helpful — jasonlam604, Sep 11 '16 at 15:54

score 1 · Answer 1 · edited May 23 '17 at 12:32

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You could use a query string. You could set the link in JavaScript like this:

var a = document.getElementById('linkId');
a.href = "link?var=" + var;

You would have to run this code each time you change your variable.

If you need to parse the query string I would refer to this post: How can I get query string values in JavaScript?

edited May 23 '17 at 12:32

Community

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answered Sep 11 '16 at 15:55

Niles Tanner

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How to access this variable in frame2? – zaolee_dragon Sep 11 '16 at 16:02
Edited my answer to include a way to change the link dynamically – Niles Tanner Sep 11 '16 at 16:11

How to pass a variable from one frame to another frame in HTML

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