Phiên bản đầy đủ: jsB@nk » » Đổi sang số La Mã
URL: https://www.javascriptbank.com/roman-numeral-converter-2.html
Đoạn mã này sẽ đổi một số do bạn nhập vào sang một số La Mã, số có thể đổi lên tới 3,999,999.
Phiên bản đầy đủ: jsB@nk » » Đổi sang số La Mã
URL: https://www.javascriptbank.com/roman-numeral-converter-2.html
<SCRIPT type=text/javascript><!--// Created by: Kurt Grigg :: http://www.kurtsdhtml.pwp.blueyonder.co.uk/function isValidInput(x){ var inpt = document.getElementById("converterinput"); if (x == "" || /^\s+$/.test(x)){ alert('Empty!\nEnter a number to be converted to Roman numerals.'); inpt.value = ""; inpt.focus(); return false; } x = x.replace(/[ ]+/g,""); inpt.value = x; if (/\D+/g.test(x)){ alert("Numbers only!\nRemoving non-numerical characters..."); x = x.replace(/\D+/g,""); inpt.value = x; if (x == "") { alert('...no number found after removal.\nTry again.'); inpt.focus(); return false; } } if (/^0+$/g.test(x)){ inpt.value = 0; inpt.select(); alert('There is no Roman numeral for zero!\nEnter a number from 1 to 3,999,999'); return false; } if (x < 1 || x > 3999999){ x = x.replace(/^0+/g,""); inpt.value = x; alert('Enter a number from 1 to 3,999,999 only!'); inpt.select(); return false; } x = x.replace(/^0+/g,""); inpt.value = x; converter(x);}function drawNumerals(n){ var d = document; var temp = d.getElementById('converteroutput'); temp.firstChild.data = ''; var draw = d.createElement('span'); if (n.toLowerCase() == n){ draw.style.borderTop = '2px solid #000000'; draw.style.fontVariant = 'small-caps'; } draw.appendChild(d.createTextNode(n)); temp.appendChild(draw);}function converter(e){ var t = drawNumerals; var a = [[1000000,'m'], [900000,'cm'],[500000,'d'],[400000,'cd'],[100000,'c'], [90000,'xc'],[50000,'l'],[40000,'xl'],[10000,'x'], [9000,'M','x'],[5000,'v'],[4000,'M','v'],[1000,'M'], [900,'CM'],[500,'D'],[400,'CD'],[100,'C'], [90,'XC'],[50,'L'],[40,'XL'],[10,'X'], [9,'IX'],[5,'V'],[4,'IV'],[1,'I']]; for (var i = 0; i < a.length; i++){ while (e - a[i][0] >= 0){ t(a[i][1]); if (a[i].length == 3){ t(a[i][2]); } e -= a[i][0]; } }}function resetconverter(){ var temp = document.getElementById("converteroutput"); while (temp.lastChild.nodeName == 'SPAN'){ temp.removeChild(temp.lastChild); } document.getElementById("converterinput").value = "";}function beginConverter(e){ resetconverter(); isValidInput(e);}//--></SCRIPT><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><DIV id=convertercontainer><DIV id=convertertitle>Numbers To Roman Numerals Converter</DIV>Enter a number from 1 to 3,999,999<BR><INPUT id=converterinput autocomplete="off"> = <SPAN id=converteroutput> </SPAN><BR><INPUT class=converterbuttons onclick="beginConverter(document.getElementById('converterinput').value);this.blur()" type=button value=Convert> <INPUT class=converterbuttons onclick=resetconverter();this.blur() type=button value=Reset> </DIV></DIV><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->