如何在JavaScript中创建二维数组（）

【如何在JavaScript中创建二维数组（）】二维数组是一个具有共同名称的项目的集合, 它们以行和列的形式组织成矩阵。二维数组是数组的数组, 因此我们创建一维数组对象的数组。
以下程序显示了如何创建2D数组：
示例1：

< script> //Create one dimensional array var gfg = new Array(2); document.write( "Creating 2D array < br> " ); //Loop to create 2D array using 1D array for ( var i = 0; i < gfg.length; i++) { gfg[i] = new Array(2); }var h = 0; //Loop to initilize 2D array elements. for ( var i = 0; i < 2; i++) { for ( var j = 0; j < 2; j++) { gfg[i][j] = h++; } }//Loop to display the elements of 2D array. for ( var i = 0; i < 2; i++) { for ( var j = 0; j < 2; j++){ document.write(gfg[i][j] + " " ); } document.write( "< br> " ); } < /script>

输出如下：

Creating 2D array 0 1 2 3

示例2：

< script> //Create one dimensional array var gfg = new Array(3); //Loop to create 2D array using 1D array document.write( "Creating 2D array < br> " ); for ( var i = 0; i < gfg.length; i++) { gfg[i] = []; } var h = 0; var s = "lsbin" ; //Loop to initilize 2D array elements. for ( var i = 0; i < 3; i++) { for ( var j = 0; j < 3; j++) {gfg[i][j] = s[h++]; } }//Loop to display the elements of 2D array. for ( var i = 0; i < 3; i++) { for ( var j = 0; j < 3; j++){ document.write(gfg[i][j] + " " ); } document.write( "< br> " ); }< /script>

输出如下：