javascript - 如何访问数组中已经存在于带循环对象中的嵌套对象

Question

var jsonObj = [
   {
      property1 : "one",
      property2 : "two",
      property3 : "three",
      property4 : [
         {
            name: "nicholas",
            name1: "cage"
         },
         {
            name: "stuart",
            name1: "walker"
         }
      ]
   }
];

var strBuilder = [];

for(var key in jsonObj){
   if (jsonObj.hasOwnProperty(key)) {
       strBuilder.push("Key is " + key + ", value is " + jsonObj[key] + "\n");
   }
}

alert(strBuilder.join(""));

当它到达属性 4 附近时，我得到了对象对象，但我想通过循环访问整个代码。

Answer 1

如您所见，对象被强制转换为字符串本身，而不是对象内部的内容。您可能想先获取内容。

所以我把你的代码改成了递归函数。

var jsonObj = [
   {
      property1 : "one",
      property2 : "two",
      property3 : "three",
      property4 : [
         {
            name: "nicholas",
            name1: "cage"
         },
         {
            name: "stuart",
            name1: "walker"
         }
      ]
   }
];

function objectStringer(obj){
	var strBuilder = [];
    for(var key in obj){
       if (obj.hasOwnProperty(key)) {
			if(typeof(obj[key]) == 'object')
				strBuilder.push(objectStringer(obj[key]).join(""))
			else
           		strBuilder.push("Key is " + key + ", value is " + obj[key] + "\n");
       }
    }
	return strBuilder;
}

console.log(objectStringer(jsonObj).join(""));