jQuery: Tap

tap.min.js

// Tap
!function(a,b){"use strict";var c,d,e,f="._tap",g="._tapActive",h="tap",i="clientX clientY screenX screenY pageX pageY".split(" "),j={count:0,event:0},k=function(a,c){var d=c.originalEvent,e=b.Event(d);e.type=a;for(var f=0,g=i.length;g>f;f++)e[i[f]]=c[i[f]];return e},l=function(a){if(a.isTrigger)return!1;var c=j.event,d=Math.abs(a.pageX-c.pageX),e=Math.abs(a.pageY-c.pageY),f=Math.max(d,e);return a.timeStamp-c.timeStamp<b.tap.TIME_DELTA&&f<b.tap.POSITION_DELTA&&(!c.touches||1===j.count)&&o.isTracking},m=function(a){if(!e)return!1;var c=Math.abs(a.pageX-e.pageX),d=Math.abs(a.pageY-e.pageY),f=Math.max(c,d);return Math.abs(a.timeStamp-e.timeStamp)<750&&f<b.tap.POSITION_DELTA},n=function(a){if(0===a.type.indexOf("touch")){a.touches=a.originalEvent.changedTouches;for(var b=a.touches[0],c=0,d=i.length;d>c;c++)a[i[c]]=b[i[c]]}a.timeStamp=Date.now?Date.now():+new Date},o={isEnabled:!1,isTracking:!1,enable:function(){o.isEnabled||(o.isEnabled=!0,c=b(a.body).on("touchstart"+f,o.onStart).on("mousedown"+f,o.onStart).on("click"+f,o.onClick))},disable:function(){o.isEnabled&&(o.isEnabled=!1,c.off(f))},onStart:function(a){a.isTrigger||(n(a),(!b.tap.LEFT_BUTTON_ONLY||a.touches||1===a.which)&&(a.touches&&(j.count=a.touches.length),o.isTracking||(a.touches||!m(a))&&(o.isTracking=!0,j.event=a,a.touches?(e=a,c.on("touchend"+f+g,o.onEnd).on("touchcancel"+f+g,o.onCancel)):c.on("mouseup"+f+g,o.onEnd))))},onEnd:function(a){var c;a.isTrigger||(n(a),l(a)&&(c=k(h,a),d=c,b(j.event.target).trigger(c)),o.onCancel(a))},onCancel:function(a){a&&"touchcancel"===a.type&&a.preventDefault(),o.isTracking=!1,c.off(g)},onClick:function(a){return!a.isTrigger&&d&&d.isDefaultPrevented()&&d.target===a.target&&d.pageX===a.pageX&&d.pageY===a.pageY&&a.timeStamp-d.timeStamp<750?(d=null,!1):void 0}};b(a).ready(o.enable),b.tap={POSITION_DELTA:10,TIME_DELTA:400,LEFT_BUTTON_ONLY:!0}}(document,jQuery);