//封裝 function clone (obj) {// Handle the 3 simple types, and null or undefinedif (null == obj || "object" != typeof obj) return obj;// Handle Dateif (obj instanceof Date) {var copy = new Date();copy.setTime(obj.getTime());return copy;}// Handle Arrayif (obj instanceof Array) {var copy = [];for (var i = 0; i < obj.length; ++i) {copy[i] = clone(obj[i]);}return copy;}// Handle Objectif (obj instanceof Object) {var copy = {};for (var attr in obj) {if (obj.hasOwnProperty(attr)) copy[attr] = clone(obj[attr]);}return copy;}throw new Error("Unable to copy obj! Its type isn't supported.");};//調(diào)用 var arr=[1,2,3,5];var aa=clone(arr);console.log(aa);console.log(arr);var object1={"yu":1,"yo":2} ;var obj1=clone(object1);console.log(object1);console.log(obj1);var dta=new Date();var qq=clone(dta);console.log(dta);console.log(qq);

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轉(zhuǎn)載于:https://www.cnblogs.com/zhoushuang0426/p/10937467.html

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