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JavaScript Operator: exponentiation

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In JavaScript, the ** operator is the (binary) arithmetic operator for exponentiation.

 

For example, if x is 8 then y = x ** 5 results in y becoming 32768.

 

Note: older browsers may not recognise this operator or the **= operator, in which case the Math.pow() method would need to be used.

 

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;}</style>
</head>
<body>
<table>
<tr>
<th>Example</th>
<th>Resulting value of <code>x</code></th>
</tr>
<tr>
<td><code id="Example"></code></td>
<td><code id="Result"></code></td>
</tr>
</table>

<script>
document.getElementById("Example").innerHTML =
  'var x = 8 ** 5;';
document.getElementById("Result").innerHTML = 8 ** 5;
</script>

</body>
</html>


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