Number.parseFloat()
The Number.parseFloat()
method parses an argument and returns a floating point number. If a number cannot be parsed from the argument, it returns NaN
.
Syntax
Number.parseFloat(string)
Parameters
string
- The value to parse. If this argument is not a string, then it is converted to one using the
ToString
abstract operation. Leading whitespace in this argument is ignored.
Return value
A floating point number parsed from the given string
.
Or NaN
when the first non-whitespace character cannot be converted to a number.
Polyfill
if (Number.parseFloat === undefined) {
Number.parseFloat = parseFloat;
}
Examples
Number.parseFloat vs parseFloat
This method has the same functionality as the global parseFloat()
function:
Number.parseFloat === parseFloat; // true
This method is also part of ECMAScript 2015. (Its purpose is modularization of globals.)
See parseFloat()
for more detail and examples.
Specifications
Browser compatibility
BCD tables only load in the browser
See also
-
Number
- The object this method belongs to.
- The global
parseFloat()
method.