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copied!<p>This we did in one of our project long back. I just find out the code . Our application was in asp.net. Function <strong>dollarAmount</strong> does the work</p> <pre><code>function checkNum(data) { // checks if all characters var valid = "0123456789."; // are valid numbers or a "." var ok = 1; var checktemp; for (var i=0; i<data.length; i++) { checktemp = "" + data.substring(i, i+1); if (valid.indexOf(checktemp) == "-1") return 0; } return 1; } function dollarAmount(form, field, appendZero) { Num = "" + eval("document." + form + "." + field + ".value"); if(Num=="") { eval("document." + form + "." + field + ".value = '" + 0 + "';"); return; } dec = Num.indexOf("."); end = ((dec > -1) ? "" + Num.substring(dec,Num.length) : ""); Num = "" + parseInt(Num); var temp1 = ""; var temp2 = ""; //var appendZero=1; if (checkNum(Num) == 0) { //alert("This does not appear to be a valid number. Please try again."); } else { if(appendZero==1 || end !="") { if (end.length == 2) end += "0"; if (end.length == 1) end += "00"; if (end == "") end += ".00"; } var count = 0; for (var k = Num.length-1; k >= 0; k--) { var oneChar = Num.charAt(k); if (count == 3) { temp1 += ","; temp1 += oneChar; count = 1; continue; } else { temp1 += oneChar; count ++; } } for (var k = temp1.length-1; k >= 0; k--) { var oneChar = temp1.charAt(k); temp2 += oneChar; } temp2 = temp2 + end; eval("document." + form + "." + field + ".value = '" + temp2 + "';"); } } </code></pre> <p>We called this function like this</p> <pre><code>txtBox.Attributes.Add("OnBlur", "return DollarAmount('" + txtBox.ID + "',0)"); </code></pre> <p>Also after googling I found this links</p> <p>a) <a href="http://www.web-source.net/web_development/currency_formatting.htm" rel="nofollow noreferrer">Use JavaScript to Format Currency within Your Web Page</a></p> <p>b) <a href="http://javascript.internet.com/forms/currency-format.html" rel="nofollow noreferrer">Currency Format</a></p> <p>Also I guess that JQuery may have some plugin for serving the purpose <a href="http://plugins.jquery.com/node/3796" rel="nofollow noreferrer">Currency: an unobstrusive automatic and real time currency conversion</a></p> <p>But I doubt if any inbuilt function is available in javascript. Please let me know if you found any. I would love to know.</p> <p>Thanks .</p>

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