How to write two-dimensional array in javascript

How to write two-dimensional arrays in javascript: 1. "var array name = []; a [one-dimensional subscript, two-dimensional subscript] = value;"; 2. "var array name = [[value List],...[List of values]];"; 3. "var array name=new Array([List of values],...[List of values]);".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

Creation of two-dimensional array

JavaScript does not directly support two-dimensional arrays, but you can set the value of the array element equal to the array, so that you can simulate the two-dimensional array structure.

Method 1 to define a two-dimensional array:

var a = [];
a[0,0] = 1;
a[0,1] = 2;
a[1,0] = 3;
a[1,1] = 4;

Method 2 to define a two-dimensional array:

var a = [  //定义二维数组
    [1.1, 1.2],
    [2.1, 2.2]
];

Method 3 to define a two-dimensional array:

var a = new Array(
[1.1, 1.2],
[2.1, 2.2]
);  //定义二维数组

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