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BlainMaguire/whiteboard.js

Last active June 2, 2017 13:44
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whiteboard.js
data:text/html,<body style=margin:0><canvas id=c><script>var a,d=document,e=c.getContext("2d");c.width=innerWidth;c.height=innerHeight;e.lineWidth=9;e.lineJoin=e.lineCap="round";d.onmousedown=function(b){e.beginPath();a=!e.moveTo(b.clientX,b.clientY)};d.onmousemove=function(b){return a&&(e.lineTo(b.clientX,b.clientY),e.stroke())};d.onmouseup=function(){return a=0};d.onkeyup=function(b){switch(b.keyCode){case 32:e.strokeStyle=prompt("Enter new colour",e.strokeStyle);case 189:e.lineWidth--;break;case 187:e.lineWidth++}};</script>
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BlainMaguire commented Jun 2, 2017 •
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Instant Whiteboard Anywhere

Paste into browser address bar to get a whiteboard.

Left click and drag will draw.
Space will prompt you to change colour.
'-' and '=' keys will make the stroke size bigger or smaller.
Right click to copy to the clipboard or save as an image.

You can also create a 'notepad' by pasting the following into your browser:

data:text/html, <html contenteditable>

Both can be added to your browser bookmarks so you can use them at your convenience.

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