JavaScript Operator: strictly not equal
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In JavaScript,
the !== operator is
the ‘strictly not equal to’ operator:
|
x
|
Y
|
x != y
|
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8
|
8
|
false
|
|
8
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5
|
true
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Note: if x and y
are of the same type then this operator should return the same as the ‘not
equal to’ operator, !=.
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>table,th,tr,td {border: 1px solid black;
border-collapse: collapse; text-align: center;}</style>
</head>
<body>
<table>
<tr>
<th> x </th><th> y </th>
<th><code>x != y</code></th><th><code>x !== y</code></th>
</tr>
<tr>
<td><code>8</code></td><td><code>"8"</code></td>
<td><code id="A1"></code></td><td><code id="A2"></code></td>
</tr>
<tr>
<td><code>8</code></td><td><code>8</code></td>
<td><code id="B1"></code></td><td><code id="B2"></code></td>
</tr>
<tr>
</table>
<script>
document.getElementById("A1").innerHTML = 8 != "8";
document.getElementById("A2").innerHTML = 8 !== "8";
document.getElementById("B1").innerHTML = 8 != 8;
document.getElementById("B2").innerHTML = 8 !== 8;
</script>
</body>
</html>
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