JavaScript的数组列表

Question

我们能否在运行时附加的ArrayList或功能与JavaScript对象

function abc(){ 
     this.a = 1; 
     this.b = 2; 
    } 
    var obj = new abc(); 
    obj.list.add("abc"); // list is not declare in class abc 

Answer 1

function abc(){ 
    this.a = 1; 
    this.b = 2; 
} 
var obj = new abc(); 
obj.list = ["abc"]; 

Answer 2

var obj = new abc(); 
obj.list = []; 
obj.list.unshift("abc"); 

Answer 3

function abc(){ 
     this.a = 1; 
     this.b = 2; 
    } 
    var obj = new abc(); 
    obj.list = new Array(); 
    obj.list.push("abc"); 

Answer 4

我认为你需要写

obj.push("abc") 

Answer 5

，你首先必须要声明列表，那么你可以访问/修改它作为任何其他对象prop：

var obj = new abc(); 
obj.list = [];//or obj.list = new Array(); 
obj.list.add("abc");