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johan / jquery.nodoubletapzoom.js
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A jQuery plugin to selectively disable the iOS double-tap-to-zoom action on specific page elements (and have that generate two click events instead).

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jquery.nodoubletapzoom.js
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// jQuery no-double-tap-zoom plugin
 
// Triple-licensed: Public Domain, MIT and WTFPL license - share and enjoy!
 
(function($) {
  var IS_IOS = /iphone|ipad/i.test(navigator.userAgent);
  $.fn.nodoubletapzoom = function() {
    if (IS_IOS)
      $(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
        $(this).trigger('click').trigger('click');
      });
  };
})(jQuery);
Thiemo-Mueller commented

Hey johan,

thanks for the snippet!
I'd just recommend adding a "return this;" to make it chainable.

--Thiemo

john-cheesman commented

Thanks for this!

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