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assist_link.js a标签手机pc通用

2016-07-27 14:12 609 查看
!function(){var a={tap:function(a,b){if(!("ontouchstart"in window))return this.tap=this.clickFun,void this.clickFun(a,b);var c=0,d=0;a.addEventListener("touchstart",function(a){c=a.touches[0].clientX,d=a.touches[0].clientY}),a.addEventListener("touchend",function(e){var f=e.changedTouches[0].clientX,g=e.changedTouches[0].clientY;Math.abs(f-c)<5&&Math.abs(g-d)<5&&b.call(a,e)})},clickFun:function(a,b){a.addEventListener("click",function(c){b.call(a,c)})},isBtn:function(a){for(var b=document.getElementsByTagName("html")[0];a!=b&&a;){if("btn"==a.getAttribute("type"))return a;a=a.parentNode}return!1},touchHover:function(a,b){function c(){a.className=d,document.removeEventListener("touchmove",c,!1),document.removeEventListener("touchend",c,!1)}var d=a.className;b=b?b:"press",a.className=d+" "+b,document.addEventListener("touchend",c,!1),document.addEventListener("touchmove",c,!1)}},b=document.getElementsByTagName("html")[0];b.addEventListener("touchstart",function(b){var c=b.target;a.touchHover(a.isBtn(c))},!1),a.tap(b,function(b){var c=b.target;a.isBtn(c)&&a.isBtn(c).getAttribute("href")&&(window.location=a.isBtn(c).getAttribute("href"))})}();
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