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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<!-- Create the canvas that the C++ code will draw into -->
<canvas id="canvas" oncontextmenu="event.preventDefault()"></canvas>
<!-- Allow the C++ to access the canvas element -->
<script type='text/javascript'>
var canv = document.getElementById('canvas');
var Module = {
canvas: canv
};
</script>
<!-- Call the javascript glue code (index.js) as generated by Emscripten -->
<script src="index.js"></script>
<!-- Allow the javascript to call C++ functions -->
<script type='text/javascript'>
canv.addEventListener('click', _toggle_background_color, false);
canv.addEventListener('touchend', _toggle_background_color, false);
</script>
<!-- Describe what the user is seeing -->
<p>Click the canvas to change the background color.</p>
<hr>
<p>Minimal example of animating the HTML5 canvas from C++ using OpenGL through WebAssembly.</p>
<p>Source code: <a href="https://github.com/timhutton/opengl-canvas-wasm">https://github.com/timhutton/opengl-canvas-wasm</a></p>
</body>
</html>