Why do all canvas examples use ctx?

Question

Is this a requirement or a convention? If it\'s a convention what\'s the reason? Ctx doesn\'t seem especially memorable or intuitive.

e.g.

var ctx =          


        

Answer 1

it's exactly the same if you do

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

or

var whatever = document.getElementById('canvas').getContext('2d');

I think "ctx" is really explanatory and short enough :)