JavaScript 之 JSON [2] 对象和数组的定义、访问、修改

JavaScript 之 JSON [2] 对象和数组的定义、访问、修改

1、对象和数组的定义、访问、修改

var JSONObject,Jvale;
JSONObject= { //对象
    "name":"滔Roy",
    "date":"2023.04.14",
	"other":[12,"TaoRoy",null,true]   //数组
};
Jvale=JSONObject.name;  //对象的访问
document.getElementById("demo").innerHTML = Jvale ;
JSONObject.name="TaoRoy";  //对象的修改
Jvale = Jvale + "<br>" + JSONObject.name;
document.getElementById("demo").innerHTML = Jvale;

Jvale = Jvale + "<br>" + JSONObject.other;
document.getElementById("demo").innerHTML = Jvale;
JSONObject.other[2] = 2023 //数组的修改
Jvale = Jvale + "<br>" + JSONObject.other;
document.getElementById("demo").innerHTML = Jvale;

2、循环获取　　

//循环获取数据
for (let key in JSONObject) {
  Jvale = Jvale + "<br>" + key + ": " + JSONObject[key];
  document.getElementById("demo").innerHTML = Jvale;
}

　　

　　

 

创建时间：2023.04.14　　更新时间：