2d array javascript
var items =[
[1, 2, 3],//this is row 0
[4, 5, 6],//this is row 1
[7, 8, 9] //this is row 2
//cullom 0 cullom 1 cullom2
]
console.log(/* variable name */ items[/*row*/ 0][/*cullom*/ 0]);