Float sum with javascript [duplicate]

Question

Possible Duplicate:
Is JavaScript's Math broken?

I'm calculating the sum of several float values using javascript and... I've noticed a strange thing never seen before. Executing this code:

parseFloat('2.3') + parseFloat('2.4') 

I obtain 4.699999999999999

So... what sould I do to obtain a correct value? (supposed that this is incorrect...)

Answer 1

Once you read what What Every Computer Scientist Should Know About Floating-Point Arithmetic you could use the .toFixed() function:

var result = parseFloat('2.3') + parseFloat('2.4'); alert(result.toFixed(2));​ 

Answer 2

(parseFloat('2.3') + parseFloat('2.4')).toFixed(1); 

its going to give you solution i suppose