Draw Grid

HTML

<canvas id="grid" width=300 height=300>

JavaScript

$(document).ready(function(){
    var ctx = document.getElementById('grid').getContext('2d');
    ctx.fillStyle = "rgb(200,0,0)";
    ctx.beginPath();    
    for (var x = 0, i = 0; i < 5; x+=44, i++) {
        for (var y = 0, j=0; j < 5; y+=44, j++) {            
            ctx.rect (x, y, 40, 40);
        }
    }
    ctx.fill();
    ctx.closePath();
});