JavaScript parseFloat() Function: Convert Strings to Numbers

parseFloat is a JavaScript function that converts a string to a floating-point number. It takes a string as an argument, and returns the corresponding floating-point number. If the string is not a valid number, the function returns NaN (Not a Number).

For example:

parseFloat('3.14'); // returns 3.14
parseFloat('2.5');  // returns 2.5
parseFloat('10');   // returns 10
parseFloat('hello'); // returns NaN