jQuery unik
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery.unique demo</title>
<style>
div {
color: blue;
}
</style>
<script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
<div>There are 6 divs in this document.</div>
<div></div>
<div class="dup"></div>
<div class="dup"></div>
<div class="dup"></div>
<div></div>
<script>
// unique() must take a native array
var divs = $( "div" ).get();
// Add 3 elements of class dup too (they are divs)
divs = divs.concat( $( ".dup" ).get() );
$( "div" ).eq( 1 ).text( "Pre-unique there are " + divs.length + " elements." );
divs = jQuery.unique( divs );
$( "div" ).eq( 2 ).text( "Post-unique there are " + divs.length + " elements." )
.css( "color", "red" );
</script>
</body>
</html>
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