JSFiddle - React, Tailwind, and code Playground
HTML
<body>
<script>
var x = [1,2,1,2];
var y = $.unique(x);
document.write(y);
</script>
</body>
<body>
<script>
var x = [1,2,1,2];
var y = $.unique(x);
document.write(y);
</script>
</body>