JavaScript logical operators are used to perform logical operations on the operands.
JavaScript Logical Operators List:
| Operator | Description | Example |
| && | Logical AND | (20==40 && 20==30) = false |
| || | Logical OR | (20==40 || 20==30) = false |
| ! | Logical Not | !(20==30) = true |
JavaScript Logical Operators Example:
<html>
<head>
<script type="text/javascript">
var a = true;
var b = false;
var linebreak = "<br />";
document.write("(a && b) => ");
result = (a && b);
document.write(result);
document.write(linebreak);
document.write("(a || b) => ");
result = (a || b);
document.write(result);
document.write(linebreak);
document.write("!(a && b) => ");
result = (!(a && b));
document.write(result);
document.write(linebreak);
</script>
</head>
<body>
</body>
</html>
Try it:
