Scaling HTML5 canvas width preserving w/h aspect ratio

Question

I have a canvas element with dimensions of 979X482px and I\'d like to have it stretch to fit the width of any given browser window, keeping the aspect ratio of width/hight 1

Answer 1

 ctx.canvas.width = window.innerWidth;

 ctx.canvas.height = 3*window.innerWidth/4;

or some variation of that. ctx is the context. An if statement for edge cases might be necessary!