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January 2, 2018 06:04
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Alpha Numeric Incremental Javascript
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| function incAlphaNumeric(c) { | |
| var u = c.toUpperCase(); | |
| var p = ""; | |
| var q = ""; | |
| var incrementalSign = 1; | |
| var incrementalCounter = 1; | |
| var initialLength = u.length; | |
| var appender = ""; | |
| if(u.length > 0){ | |
| while(incrementalSign == 1){ | |
| p = u.substring(0, u.length - incrementalCounter); | |
| q = u.substring(0, u.length - incrementalCounter + 1).slice(-1); | |
| if(!isNaN(q)){ | |
| if(q==9){ | |
| q=0; | |
| incrementalCounter++; | |
| } else { | |
| q++; | |
| incrementalSign = 0; | |
| } | |
| } else { | |
| if(q.toUpperCase() == 'Z'){ | |
| q ='A'; | |
| incrementalCounter++; | |
| } else { | |
| q = nextChar(q); | |
| incrementalSign = 0; | |
| } | |
| } | |
| u = p+q+appender; | |
| if(incrementalCounter>1){ | |
| appender = u.substring(u.length - incrementalCounter + 1); | |
| } | |
| } | |
| if(u.length > initialLength){ | |
| var _temp = u.substring(1); | |
| var _temp1 = u.substring(0, 1); | |
| u = _temp + _temp1; | |
| } | |
| return u.toUpperCase(); | |
| } else { | |
| return ""; | |
| } | |
| } | |
| function nextChar(c) { | |
| var i = (parseInt(c, 36) + 1 ) % 36; | |
| return (!i * 10 + i).toString(36); | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>increment</title> | |
| <script type="text/javascript" src="alpha-numeric-increment.js"></script> | |
| </head> | |
| <body> | |
| <input type="text" id="inputIncrement"/> | |
| <button id="incrementBtn" onclick="myFunction()">Increment</button> | |
| <span id="resultSpan"></span> | |
| </body> | |
| <script type="text/javascript"> | |
| var inputIncrement = document.getElementById("inputIncrement"); | |
| var incrementBtn = document.getElementById("incrementBtn"); | |
| var resultSpan = document.getElementById("resultSpan"); | |
| var myFunction = function(){ | |
| var resultString = incAlphaNumeric(inputIncrement.value.toString()); | |
| resultSpan.innerHTML = resultString; | |
| } | |
| </script> | |
| </html> |
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There are some node modules available to increment alpha numeric strings but what they do is just increment the edge numbers like 9 to 10 so if I would give input 'f9' then output would come 'f10' but it should 'g0'.
So here it is. try it out.