Steps to apply styles to an iframe element directly from its inner HTML code

Looking for help with this line of code:

<iframe src="http://www.google.com" name="google" style="Z-INDEX: 0; MARGIN-TOP: -1px; WIDTH: 100%; HEIGHT: 1070px">
    <html>
         <head></head>
         <body>
             <div>Some image is here</div>
         </body>
    </html>
</iframe>

Encountering an issue where the iframe is not visible in IE7 unless display: block; is added to the style.

Unable to modify the style of the top iframe, but can adjust the inner html content.

Is there a way to set the style of the top iframe from my HTML page?

htmlcssiframe

Answer №1

The Same-Domain Policy restricts Iframe content to its originating domain. Control is only granted if the Iframe belongs to your own domain, otherwise access is denied to prevent potential page hijacking.

When you have direct access, follow these steps:

Utilize JavaScript for manipulation. Similar to actions on the parent page, remember to specify the iframe's name before executing the JavaScript command.

Keep in mind that the Same Origin Policy requires the iframe to come from your server in order for this method to work.

I personally prefer using the Prototype framework for convenience:

frame1.$('mydiv').style.border='1px solid #000000'

or

frame1.$('mydiv').addClassName('withborder')

Answer №2

Check out this code snippet.

<iframe id="f" width="200" height="200"></iframe>


----------
var element = document.getElementById('f');
element.contentDocument.write("hello there");

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