Below is the example of the Number() function.

• Example:
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  <script>     // JavaScript to illustrate     // Number() function     function func() {            // Original string         var a = true;            var value = Number(a);         document.write(value);     } // Driver code func(); </script>

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• Output:

  1

The Number() function is used to convert data type to number.

Syntax:

Number(object)

Parameters: This function accept a single parameter as mentioned above and described below:

object: This parameter holds the objects that will be converted any type of javascript variable to number type.

Return Values: Number() function returns the number format for any type of javascript variable.

Below examples illustrate the Number() function in JavaScript:

• Example 1:

  Input : Number(true);
               Number(false);
  Output : 1
           0

• Example 2: Not a number is returned by the compiler.

  Input : Number("10 20");
  Output: NaN

• Example 3: The Number() method above returns the number of milliseconds since 1.1.1970.

  Input : Number(new Date("2017-09-30"));
  Output : 1506729600000

• Example 4:

  Input : Number("John");
  Output : NaN
  

More example codes for the above function are as follows:

Program 1:

Output:

NaN

Program 2:

Output:

1506729600000

Program 4:

Output:

NaN

Supported Browsers:

• Google Chrome
• Firefox
• Internet Explorer
• Safari
• Opera