Support passive event listeners

[Chaoste]

Hi,

Can you add passive event listeneres as mentioned this SO post? I'm getting browser warnings in Chrome right now due to this problem.

Greetings, Thomas

[markadrake]

Taken from Modernizr:

var supportsPassiveOption = false;
    try {
      var opts = Object.defineProperty({}, 'passive', {
        get: function() {
          supportsPassiveOption = true;
        }
      });
      window.addEventListener('test', null, opts);
    } catch (e) {}

Edited: see comment below.

[markadrake]

I started by hard coding the passive: true into place, and now I've paired it to use of preventDefault. You can see the 2 commits I've made already here: https://github.com/markadrake/zingtouch/tree/passive-event-listeners.

I think there's just one more thing which is using the right value for State.js where there is another addEventListener but no reference to whether preventDefault will be called.

[Chaoste]

Hi,

Thanks for your answer! Unfortunately my team switched to HammerJS for the moment because it might work better for Edge/Explorer.

[1ubuntuuser]

@Chaoste How did you find it? On my initial research I found this library to be superior.