Tips for dynamically adjusting an iframe's content size as the browser window is resized

Currently, I am in the process of building a website that will showcase a location on a map (not Google Maps). To achieve this, I have utilized an iframe to contain the map and my goal is for the map to adjust its width based on the width of the browser window.

This snippet shows the code I have implemented:

<iframe width='1800' height='300' frameborder='0' scrolling='no' marginheight='0' marginwidth='0' src='http://f.amap.com/xxxxxxxxxx'></iframe>

In order to resize the iframe dynamically, I have used jQuery to modify the width and height attributes according to the browser window dimensions like so:

$(window).resize(function(){
var window_width = $(window).width();
$('iframe').width(window_width);
});

Despite successfully changing the width of the iframe element, the content within it does not resize accordingly. How can I ensure that both the iframe and its contents adjust proportionally when the window is resized? Your assistance is greatly appreciated!

Answer №1

To ensure the max-width attribute is set to 100%.

<iframe width='1800' height='300' style="max-width:100%" frameborder='0' scrolling='no' marginheight='0' marginwidth='0' src='http://f.amap.com/xxxxxxxxxx'> 
</iframe>

This approach will make it adjust dynamically based on the size of the browser window.

Answer №2

Your website does not have permission to alter the contents of an embedded iframe. If you have control over the content within the iframe, consider setting up a messaging system between the two sites. It's worth investigating if such a system already exists, even if you do not have control over the other site.

If that is not possible, I suggest simply refreshing the content of the iframe:

$( '#iframe' ).attr( 'src', function ( i, val ) { return val; });

Additionally, as pointed out by misorude in a comment, make sure to contain this code so it does not trigger immediately upon resizing, which could flood the remote site with excessive requests.

Answer №4

If you're not facing any CORS issues and the website you're targeting is responsive, you could experiment with code similar to the following:

$(window).resize(function(){
  var window_width = $(window).width();
  $('iframe').width(window_width);
  $('iframe').contents().width(window_width);
});

Note

I have to admit that my previous response was quite poor. I am unsure why I suggested this solution initially. The accepted answer would be the most suitable approach in this scenario.

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