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] === &#39;string&#39;){  
   alert("person中"+item+"的值="+person[item]);  
  }else if(typeof person[item] === &#39;function&#39;){  
    person[item](1,1);//js 的function的参数可以动态的改变  
  }  
 }  
//添加属性  
  
 person.isMe = &#39;kaobian&#39;; // 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[&#39;isMe.kaobian&#39;] = &#39;hello kaobian&#39;; //上面的也可以用下面的形式  
  
 for(var item in person){  
  if(typeof person[item] === &#39;string&#39;){  
   alert("person中"+item+"的值="+person[item]);  
  }else if(typeof person[item] === &#39;function&#39;){  
  
    person[item](1,1);  
  }  
 }

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