install mochai code example
Example: mocha js
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Mocha Tests</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="https://unpkg.com/mocha/mocha.css" />
</head>
<body>
<div id="mocha"></div>
<script src="https://unpkg.com/chai/chai.js"></script>
<script src="https://unpkg.com/mocha/mocha.js"></script>
<script class="mocha-init">
mocha.setup('bdd');
mocha.checkLeaks();
</script>
<script src="test.array.js"></script>
<script src="test.object.js"></script>
<script src="test.xhr.js"></script>
<script class="mocha-exec">
mocha.run();
</script>
</body>
</html>