JS常用工具代码

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(1)生成UUID
function generateUUID() {var d = new Date().getTime();var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {  var r = (d + Math.random()*16)%16 | 0;  d = Math.floor(d/16);  return (c=='x' ? r : (r&0x3|0x8)).toString(16);});return uuid;};