(PCC)::[How-to-use-The-decrement-operator-in-JavaScript]::[js]
<!DOCTYPE html>
<html>
<body>
<h2>JavaScript Operators</h2>
<p>In this example, y is decremented before it is assigned to x (pre-decremented).</p>
<p id="demo1"></p>
<p id="demo2"></p>
<script>
var y = 5;
var x = --y;
document.getElementById("demo1").innerHTML = y;
document.getElementById("demo2").innerHTML = x;
</script>
</body>
</html>
In this example, y is decremented before it is assigned to x (pre-decremented).