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Selected Reading
Explain about logical not(!) operator in detail with example in javascript?
NOT operator
The logical NOT operator gives true for false values and false for true values.
<html>
<body>
<p id="logical"></p>
<script>
var x = 200;
var y = 300;
document.getElementById("logical").innerHTML =
!(x < y) + "<br>" + !(x > y);
</script>
</body>
</html>
Output
false true
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