


Implementation of traversing the properties of a json object and dynamically adding properties
Yesterday, because of a requirement of the company, I studied the traversal and dynamic modification of the properties of the json object:
var person= { name: 'zhangsan', pass: '123' , 'sni.ni' : 'sss', hello:function (){ for(var i=0;i<arguments.length;i++){ //在不知参数个数情况下可通过for循环遍历 // arguments这个是js 默认提供 alert("arr["+i+"]="+arguments[i]); } } } //遍历属性 for(var item in person){ if(typeof person[item] === 'string'){ alert("person中"+item+"的值="+person[item]); }else if(typeof person[item] === 'function'){ person[item](1,1);//js 的function的参数可以动态的改变 } } //添加属性 person.isMe = 'kaobian'; // 这种是属性名字正常的 //当属性名字不正常时,像下面这种,必须用这种形式的, person['isMe.kaobian'] = 'hello kaobian'; //上面的也可以用下面的形式 for(var item in person){ if(typeof person[item] === 'string'){ alert("person中"+item+"的值="+person[item]); }else if(typeof person[item] === 'function'){ person[item](1,1); } }
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