출처 :&nbsp;<a href="http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format" target="_blank" title="[http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format]로 이동합니다.">http://stackoverflow.com/questions/610406/javascript-equivalent-to-printf-string-format</a> 
 
/// StringFormat(string
expression, string[] params<o:p></o:p>

function StringFormat() {<o:p></o:p>

&nbsp;&nbsp;&nbsp; var expression = arguments[0];<o:p></o:p>

&nbsp;&nbsp;&nbsp; for (var i = 1; i &lt; arguments.length; i++) {<o:p></o:p>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //var prttern = "{" + (i -
1) + "}";<o:p></o:p>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; var prttern = new RegExp('\\{' + (i-1) + '\\}', 'gi');<o:p></o:p>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; expression =
expression.replace(prttern, arguments[i]);<o:p></o:p>

&nbsp;&nbsp;&nbsp; }<o:p></o:p>

&nbsp;&nbsp;&nbsp; return expression;<o:p></o:p>

}<o:p></o:p>

&nbsp;

사용 예<o:p></o:p>

var ex = StringFormat("{0}", "hi");<o:p></o:p>

&nbsp;

Javascript 에서 .net의 String.Format 사용하기 StringFormat String Format