| 12345678910111213141516171819202122 |
- <!DOCTYPE html>
- <html>
- <head lang="en">
- <meta charset="UTF-8">
- <title></title>
- <script>addZero = function( str, length ){
- var zero = "";
- str = str.toString();
- for( var i=0; i<length; i++ ){
- zero = zero + "0";
- }
- var s = zero + str;
- return s.substr(s.length - length, length );
- };
- alert(addZero( "123", 5 ))
- alert(addZero( "17", 5 ))
- </script>
- </head>
- <body>
- </body>
- </html>
|
