Every release of Mocha will have new builds of ./mocha.js and ./mocha.css for use in the browser.
Browser-specific methods
The following method(s) only function in a browser context:
mocha.allowUncaught() : If called, uncaught errors will not be absorbed by the error handler.
A typical setup might look something like the following, where we call mocha.setup('bdd') to use the BDD interface before loading the test scripts, running them onload with mocha.run().
<html>
<head>
<meta charset="utf-8">
<title>Mocha Tests</title>
<link href="https://unpkg.com/mocha@5.2.0/mocha.css" rel="stylesheet" />
</head>
<body>
<div id="mocha"></div>
<script src="https://unpkg.com/chai/chai.js"></script>
<script src="https://unpkg.com/mocha@5.2.0/mocha.js"></script>
<script>mocha.setup('bdd')</script>
<script src="test.array.js"></script>
<script src="test.object.js"></script>
<script src="test.xhr.js"></script>
<script>
mocha.checkLeaks();
mocha.run();
</script>
</body>
</html>
Grep
The browser may use the --grep as functionality. Append a query-string to your URL: ?grep=api.
Browser Configuration
Mocha options can be set via mocha.setup()