dRawr is a JQuery plugin that can transform any canvas component (with a container) into a drawing area. It's developed for iOS, Android, and most desktop browsers.
The only requirement at the moment is material design icons.
//Code for Example 1
html
<div style="width:350px;height:300px;border:2px dotted gray;margin:20px;">
<canvas id="canvas1"></canvas>
</div>
js
//Turn a canvas element into a sketch area
$("#canvas1").drawr({
"enable_transparency" : false,
"canvas_width" : 1200,
"canvas_height" : 1200
});
//Enable drawing mode, show controls
$("#canvas1").drawr("start");
function destroy(){
$("#canvas1").drawr("destroy");
}
function clear(){
$("#canvas1").drawr("clear");
}
}
More examples included in the package from github.