Wouter Konecny Wouter Konecny -4 years ago 210
HTML Question

Disable double-tap "zoom" option in browser on touch devices

I want to disable the double-tap zoom functionality on specified elements in the browser (on touch devices), without disabling all the zoom functionality.

For example: One element can be tapped multiple times for something to happen. This works fine on desktop browsers (as expected), but on touch device browsers, it will zoom in.

Answer Source

I just wanted to answer my question properly as some people do not read the comments below an answer. So here it is:

(function($) {
  $.fn.nodoubletapzoom = function() {
      $(this).bind('touchstart', function preventZoom(e) {
        var t2 = e.timeStamp
          , t1 = $(this).data('lastTouch') || t2
          , dt = t2 - t1
          , fingers = e.originalEvent.touches.length;
        $(this).data('lastTouch', t2);
        if (!dt || dt > 500 || fingers > 1) return; // not double-tap

        e.preventDefault(); // double tap - prevent the zoom
        // also synthesize click events we just swallowed up

I did not write this, i just modified it. I found the iOS-only version here: https://gist.github.com/2047491 (thanks Kablam)

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