var iMax = 20; var jMax = 10; var f = new Array(); for (i=0;i<iMax;i++) { f[i]=new Array(); for (j=0;j<jMax;j++) { f[i][j]=0; } }
var arr = [ ["one", "two", "three"], [4, 5, 6], ["seven", 8, "nine"], [10, "eleven", 12], ]; // So to access '8' 3rd row, second column (just minus 1) arr[2][1];
var items = [ [1, 2], [3, 4], [5, 6] ]; console.log(items[0][0]); // 1 console.log(items[0][1]); // 2 console.log(items[1][0]); // 3 console.log(items[1][1]); // 4 console.log(items);
<script type="text/javascript"> var myObj = { fred: { apples: 2, oranges: 4, bananas: 7, melons: 0 }, mary: { apples: 0, oranges: 10, bananas: 0, melons: 0 }, sarah: { apples: 0, oranges: 0, bananas: 0, melons: 5 } } document.write( myObject[ 'fred' ][ 'apples' ] );
//2D array let activities = [ ['Work', 9], ['Eat', 1], ['Commute', 2], ['Play Game', 1], ['Sleep', 7] ];