如何添加将多个对象添加到同一索引

Question

I wanted to create a multi dimensional object. Below is my sample code. I'm not very familiar in JavaScript.

Sample code

var test = {};

test[0] = {1:{a:1,b:2,c:3}};

if(true)
{
  test[0] = {2: {c:1,b:2,a:3}};
}

console.log(test);

Expecting result

{
  0: {
       1:{a:1,b:2,c:3},
       2:{c:1,b:2,a:3}  
     }
}

Answer 1

The second time you set test[0] , you're overwriting it completely. To do exactly what you're looking for, you'd use:

test[0][2] = {c:1,b:2,a:3};

Depending on what you're doing though, you might consider an array [] or Set instead.

Answer 2

You can Try this :

var obj = { 
  0: { 
    1:{a:1,b:2,c:3},
    2:{c:1,b:2,a:3} 
  }
} ;
// to access :
alert(obj[0][1].b);
// Or
alert(obj[0][1]["b"]);

Run and test it in here .