See Also Applies To

Description

Converts strings into floating point numbers.

Syntax

parseFloat(numstring)

The numstring argument is a string that contains a floating point number.

Remarks

The parseFloat method returns an numerical value equal to the number contained in numstring. If no prefix of numstring can be successfully parsed into a floating point number, NaN (not a number) is returned.

parseFloat("abc") // Returns NaN.
parseFloat("1.2abc") // Returns 1.2.

You can test for NaN using the isNaN method.