jquery - Price calculation, comma, and conditional statement -

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all sorts of topics dedicated european comma problem, i.e. how change ',' '.', i've not found solution mine yet.

i want users able input in comma-value manner (e.g. 3,99), calculate stuff , output of again in comma's. if-statement should mention if price @ end (earnings) turns negative, turns red (i.e. not possible).

i able change point comma , output that, other way around i'm dazzled. here's code far:

i've managed whole thing working based on @zirak's comments , little bit of me-magic, see code below!

function dollarformat(num) {     num = num.tostring().replace(/\u20ac/g, 'euro');     if(isnan(num)) num = "0";         cents = math.floor((num*100+0.5)%100);         num = math.floor((num*100+0.5)/100).tostring();     if(cents < 10) cents = "0" + cents;         (var = 0; < math.floor((num.length-(1+i))/3); i++)             num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3));     return (num + ',' + cents);}  $('#prijsnow').keyup(function(num) {          var comma = $(this).val().replace(',', '.');         $('#vat').text(dollarformat(comma / 119 * 100));         $('#earnings').text(dollarformat(comma / 119 * 25));                 // 0.80 minimum amount, i've put in hardcode (could dynamic well)         if (comma < 0.80) { $('#earnings').text(0); } else {$('#earnings').text(dollarformat(comma / 119 * 75 - 0.50))};                  // nice fix colour problem, easy css attribution         if (comma < 0.80) { $('#earnings').css("color","red"); }          if (comma > 0.80) { $('#earnings').css("color","green"); }      });

just looking @ script shouldn't have problem.

if (/\./.test(num))     num.replace('.', ','); //or if want other way around if (/\,/.test(num))     num.replace(',', '.');

for negative price, can use class:

if( $(earnings).val() < 0 )     $(earnings).addclass('negativeval');

and in css:

.negativeval {     color : red; }

also, save trouble: did try splitting number using split?


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