floatingpoint comparing in javascript

Question

how is this posible that 100 >= 99.2 is false?

var ls = parseFloat(("100").replace(",", ".")).toFixed(1);
var val = parseFloat(("99,2").replace(",", ".")).toFixed(1);
alert(ls >= val); /*=> result is false  ...but it should be true */

ui culture is nl-BE

jsfiddle: http://jsfiddle.net/Ed6VY/

score 5 · Accepted Answer · answered Sep 03 '12 at 13:32

5

toFixed results in a string. Strings are compared character-by-character. "9" comes after "1", so "99.2" is greater than "100.0".

answered Sep 03 '12 at 13:32

Niet the Dark Absol

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@OP; You can verify the fact that it's a string by using `alert(typeof ls);` – h2ooooooo Sep 03 '12 at 13:33
more explained here: http://stackoverflow.com/questions/2283566/tofixed-returns-a-string-in-javascript – Michiel Cornille Sep 03 '12 at 13:35

floatingpoint comparing in javascript

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