debug/setstyle.html

<!DOCTYPE html>
<html>
<head>
    <title>Mapbox GL JS debug page</title>
    <meta charset='utf-8'>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
    <link rel='stylesheet' href='/dist/mapbox-gl.css' />
    <style>
        body { margin: 0; padding: 0; }
        html, body, #map { height: 100%; }
    </style>
</head>

<body>
<div id='map'></div>

<script src='/dist/mapbox-gl-dev.js'></script>
<script src='/debug/access_token_generated.js'></script>
<script src='/debug/dark-v9.js'></script>
<script src='/debug/light-v9.js'></script>
<script>
// these are set in dark-v9.js and light-v9.js
var dark = window.darkv9;
var light = window.lightv9;

var style = dark;
var map = window.map = new mapboxgl.Map({
    container: 'map',
    zoom: 2,
    center: [-77.01866, 38.888],
    style: style,
    hash: style
});

setInterval(function () {
    style = (style === dark ? light : dark);
    map.setStyle(style);
}, 2000);

</script>
</body>
</html>