JSFiddle - React, Tailwind, and code Playground

JavaScript

twoDArray = [ [1, 2, 3, 4], [5, 6, 7, 8] ];
alert(twoDArray[0][1])

for(var x = 0; x < twoDArray.length; x++)
{
	for(var y = 0; y < twoDArray[x].length; y++)
  {
  	alert(twoDArray[x][y]);
  }
}