Jquery math less than 0 show 0

Question

how would i stop the below returning a value less than 0. I want anything less than 0 to show as 0. Any help appreciated.

$("#spanrPower_CO2").text (Math.round(-data[0] * 16.8) * 100 / 100);

You will probably get your intended result with clearer code as `Math.max(0, -data[0] * 16.8).toFixed(2)`. See http://stackoverflow.com/questions/11832914/round-to-at-most-2-decimal-places-in-javascript — Lutz Lehmann, Sep 22 '16 at 14:07
@LutzL: nicer than my answer methinks. Do consider promoting it. — Bathsheba, Sep 22 '16 at 14:09
Use an extra line of code or two, and make it crystal clear: `if ( value < 0 ) { value = 0; }`. — Teepeemm, Sep 22 '16 at 14:21
this worked great thanks! (Math.max(0, -data[0] * 16.8).toFixed(0)); — BjH, Sep 22 '16 at 15:07

score 2 · Answer 1 · answered Sep 22 '16 at 13:59

2

data[0] > 0 ? 0 : -Math.round(16.8 * data[0]); is probably clearer.

Note that unless you're approaching floating point infinity, * 100 / 100 is a no-op.

answered Sep 22 '16 at 13:59

Bathsheba

score 0 · Answer 2 · answered Sep 22 '16 at 15:08

0

(Math.max(0, -data[0] * 16.8).toFixed(0));

answered Sep 22 '16 at 15:08

BjH

2 Answers2