How do I add new attribute (element) to JSON object using JavaScript? JSON stands for JavaScript Object Notation. A JSON object is really a string that has yet to be turned into the object it represents. To add a property to an existing object in JS…
<script> //----------------for用来遍历数组对象-- var i,myArr = [1,2,3]; for (var i = 0; i < myArr.length; i++) { console.log(i+":"+myArr[i]); }; //---------for-in 用来遍历非数组对象 var man ={hands:2,legs:2,heads:1}; //为所有的对象添加clone方法,即给内置原型(object,Arra…