Canvas al centro

by beatricevivaldi

HTML

<canvas></canvas>

JavaScript

var canvas = document.querySelector('canvas');
var context = canvas.getContext('2d');

var x0 = canvas.width/2 - 15;
var y0 = canvas.height/2 -15;

//prima setto le caratteristiche
context.fillStyle = 'black';


// poi creo lo spazio
context.fillRect(x0, y0,30,30);