Tutorial Gateway

JavaScript POW

by

The JavaScript POW function is a Math function used to calculate the Power of the specified expression. The syntax of the JavaScript POW Function is:

Math.pow(base, Exponent);
  • Base: Please specify the base value here.
  • Exponent: Please specify the Exponent value or power here.

For example, if x is base value and 2 is exponent then, Math.pow(x, 2) = x²

NOTE:

  • If the Base value or Exponent value is not a number, the JavaScript POW function will return NaN.
  • If the Base value or Exponent value is Null, the POW function will return Zero.

JavaScript POW Function Example

The JavaScript POW function is used to return the Power of the given number. In this example, We are going to find the power of different data types and display the output

<!DOCTYPE html>
<html>
<head>
    <title> JavaScript POWER Function </title>
</head>
<body>
  <h1> JavaScript POW Function </h1>
  <p id = "Pos"></p>
  <p id = "Neg"></p>
  <p id = "Multi"></p>
  <p id = "Dec"></p>
  <p id = "Neg_Dec"></p>
  <p id = "Str"></p>
  <p id = "Str1"></p>
  <p id = "Null"></p>
  <script>
    document.getElementById("Pos").innerHTML = Math.pow(2, 3);
    document.getElementById("Neg").innerHTML = Math.pow(-2, 3);
    document.getElementById("Multi").innerHTML = Math.pow(2, -3);
    document.getElementById("Dec").innerHTML = Math.pow(2.50, 4.05);
    document.getElementById("Neg_Dec").innerHTML = Math.pow(-3.10,-6.05);
    document.getElementById("Str").innerHTML = Math.pow(2, "3");
    document.getElementById("Str1").innerHTML = Math.pow(2, "String");
    document.getElementById("Null").innerHTML = Math.pow(4, null);
  </script>
</body>
</html>

OUTPUT

JavaScript POW Function

ANALYSIS

We used the POW Function on both the Positive and negative decimal values. From the above screenshot, you can see the POW Function is returning NaN (Not a Number) as output for negative values.

document.getElementById("Neg_Dec").innerHTML = Math.pow(-3.10,-6.05);

Next, We used the JavaScript Power Function on the string value. The below statement is converting the “3” to an integer.

document.getElementById("Str").innerHTML = Math.pow(2, "3");

The POW math Function on “String”, as we said before, it returns NaN as output

document.getElementById("Str1").innerHTML = Math.pow(2, "String");

Last, we used POW Function and Null value. Here, null converted to Zero.

document.getElementById("Null").innerHTML = Math.pow(4, null);