Created
May 17, 2013 13:09
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Detect browser zoom in javascript 'zoom' event is triggered on window on every browser zoom change. No polling!
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| <html> | |
| <head> | |
| <script src="http://code.jquery.com/jquery-1.9.1.min.js"></script> | |
| </head> | |
| <body> | |
| <iframe id="frame" style="width: 250px; border: solid 1px red;" ></iframe> | |
| <script type="text/javascript"> | |
| var elFrame = $('#frame')[0]; | |
| $(elFrame.contentWindow).resize(function() { | |
| $(window).trigger('zoom'); | |
| }); | |
| $(window).on('zoom', function() { | |
| console.log('zoom', window.devicePixelRatio); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
i spend all of this time working on zoom bullshit, and NOW i find this.
WHY
Hi, neat solution. This method detects when you use the keyboard "command + shift + plus" or with the menu bar. However, if I pinch zoom, for some reason the zoom event doesn't trigger.. any tips on how to catch this case as well?
@amit777 For pinch zoom you need the Visual Viewport API.
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@kirilldoid because when we zomm in or zoom out, the window doesn't resize, but all other elements do. When we zoom in, all elements in window get bigger, but the window is still in the same place with the same size.