- **Javascript**
(*http://www.velocityreviews.com/forums/f68-javascript.html*)

- - **FAQ Topic - How do I convert a Number into a String with exactly 2 decimal places?**
(*http://www.velocityreviews.com/forums/t931623-faq-topic-how-do-i-convert-a-number-into-a-string-with-exactly-2-decimal-places.html*)

FAQ Topic - How do I convert a Number into a String with exactly 2 decimal places?-----------------------------------------------------------------------
FAQ Topic - How do I convert a Number into a String with exactly 2 decimal places? ----------------------------------------------------------------------- When formatting money for example, to format 6.57634 to 6.58, 6.5 to 6.50, and 6 to 6.00? Rounding of x.xx5 is uncertain, as such numbers are not represented exactly. See section 4.7 for Rounding issues. N = Math.round(N*100)/100 only converts N to a Number of value close to a multiple of 0.01; but document.write(N) does not give trailing zeroes. ECMAScript Ed. 3.0 (JScript 5.5 [but buggy] and JavaScript 1.5) introduced N.toFixed, the main problem with this is the bugs in JScripts implementation. Most implementations fail with certain numbers, for example 0.07. The following works successfully for M>0, N>0: function Stretch(Q, L, c) { var S = Q if (c.length>0) while (S.length<L) { S = c+S } return S } function StrU(X, M, N) { // X>=0.0 var T, S=new String(Math.round(X*Number("1e"+N))) if (S.search && S.search(/\D/)!=-1) { return ''+X } with (new String(Stretch(S, M+N, '0'))) return substring(0, T=(length-N)) + '.' + substring(T) } function Sign(X) { return X<0 ? '-' : ''; } function StrS(X, M, N) { return Sign(X)+StrU(Math.abs(X), M, N) } Number.prototype.toFixed= function(n){ return StrS(this,1,n)}; http://www.merlyn.demon.co.uk/js-round.htm http://msdn.microsoft.com/library/de...34c0f6d6f0.asp === Postings such as this are automatically sent once a day. Their goal is to answer repeated questions, and to offer the content to the community for continuous evaluation/improvement. The complete comp.lang.javascript FAQ is at http://jibbering.com/faq/index.html. The FAQ workers are a group of volunteers. |

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