Determine, the browser supports canvas (paperjs), or not

Question

Please tell, how can i determine, the browser supports canvas (paperjs), or not ?

Answer 1

var canvasExists = document.createElement('canvas').getContext !== undefined;

Will be true in Chrome, false in IE8, etc.

You could also check for window.HTMLCanvasElement !== undefined

Answer 2

I recommend using Modernizr for html5 canvas support detection. With Modernizr, it is as simple as

if(Modernizr.canvas) {
    //HTML5 canvas action
}

for reliable and consistent detection across all browsers.