HTML5 canvas jQuery getContext on classes

Question

This code works:

Answer 1

Use .each()

$('.dropzone').each(function(index, element) {
    var context = element.getContext('2d');
    context.beginPath();
    context.moveTo(0, 200);
    context.lineTo(578, 0);
    context.stroke();

    context.beginPath();
    context.moveTo(0, 0);
    context.lineTo(578, 200);
    context.stroke();   
});

Here's an example on jsfiddle.