JavaScript parseFloat() Function
Definition and Usage
The parseFloat() function parses a string and returns a floating point number.
This function determines if the first character in the specified string is a number. If it is, it parses the string until it reaches the end of the number, and returns the number as a number, not as a string.
Note: Only the first number in the string is returned.
Note: Leading and trailing spaces are allowed.
Note: If the first character cannot be converted to a number, parseFloat() returns NaN.
Syntax:
parseFloat(string)
Example
Parse different strings:
var a = parseFloat("10") var b = parseFloat("10.00") var c = parseFloat("10.33") var d = parseFloat("34 45 66") var e = parseFloat(" 60 ") var f = parseFloat("40 years") var g = parseFloat("He was 40")
