DrawSong/webglAvailable.html at master · WaterTian/DrawSong · GitHub

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<!DOCTYPE html>
<html>

<head>
    <title>webglAvailable</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <link rel="stylesheet" type="text/css" href="dist/style.css">
</head>

<body>
    <script>

        function webglAvailable() {
            try {
                var canvas = document.createElement( 'canvas' );
                return !!( window.WebGLRenderingContext && (
                    canvas.getContext( 'webgl' ) ||
                    canvas.getContext( 'experimental-webgl' ) )
                );
            } catch ( e ) {
                return false;
            }
        }

        //log
        logBox = document.createElement('div');
        logBox.style.position = 'absolute';
        logBox.style.top = '10px';
        logBox.style.left = '15px';
        logBox.style.width = '100%';
        logBox.style.textAlign = 'left';
        logBox.style.fontSize = '10px';
        logBox.style.color = "#666666";
        logBox.innerHTML = 'webglAvailable:<br>';
        document.body.appendChild(logBox);


        logBox.innerHTML+=webglAvailable();

    </script>
</body>

</html>