Paste code

var Engine = Class.extend({


    canvas_id: 'canvas',

    canvas: '',

    context: '',


    init: function(canvas_id)

    {

        console.log('init: Setting this.canvas_id to ' + canvas_id);

        this.canvas_id = canvas_id;

    },


    begin: function()

    {

        console.log('begin: Getting element with ID ' + this.canvas_id);

        this.canvas = document.getElementById(this.canvas_id);

        console.log(this.canvas_id);

        console.log('begin: Set this.canvas', this.canvas)

        this.context = this.canvas.getContext('2d');


        this.context.fillText("Hello World!", 10, 10);

    }


});