Accessing elements in the iframe

Question

Possible Duplicate:
Can javascript access iframe elements from the parent page?

I have an iframe in my document, and I want to get (and change) some attributes in it with JQuery. This is the code:

var iframe = $('iframe');

        $("#id").click(function() {
            var btn = iframe.contents().find('a[href*="script.php"]'); 
            alert(btn);
            for (var i=0, attrs=btn.attributes, l=attrs.length; i<l; i++){
                alert(attrs.item(i).nodeName);
            }
         });

The first alert says "[object Object]", then I'm getting errors:

Unsafe JavaScript attempt to access frame with URL http://somedomain.ru/somescript.php from frame with URL http://domain.wia-games.net/. Domains, protocols and ports must match.

and

Uncaught TypeError: Cannot read property 'length' of undefined

How should I solve the problem?

UPD. console.log(btn):

[prevObject: st.fn.st.init[0], context: document, selector: "a[href*="script.php"]", jquery: "1.9.0", constructor: function…] context: #document length: 0 prevObject: st.fn.st.init[0] selector: "a[href*="script.php"]" proto: Object[0]

You can't change the contents of an iframe from another domain — nice ass, Jan 25 '13 at 01:50
Ok, if I can not change some attribute, how can I read it's value? — artem, Jan 25 '13 at 01:54

Nabil Kadimi · Accepted Answer · 2013-01-25T01:59:42.133

2

This is a constraint implemented on browsers for security reasons: Same origin policy

Safe Workarounds exist:

JSON to JSONP: Bypass Same-Origin Policy
Using headers: Content Security Policy 1.1
YQL ?!

edited Jan 25 '13 at 01:59

answered Jan 25 '13 at 01:50

Nabil Kadimi

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score 1 · Answer 2 · edited Jan 25 '13 at 01:54

1

Most Browsers as a security feature prohibit Cross Site Scripting: http://en.wikipedia.org/wiki/Cross-site_scripting

That means the two Objects must have the same source domain.

As a workaround you might want to query the foreign page on the server-side (e.g. with php)

edited Jan 25 '13 at 01:54

Ian

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answered Jan 25 '13 at 01:53

Edmund Moshammer

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Accessing elements in the iframe

2 Answers2