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validate date and also reformat date
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Checking Date</title> | |
| <style> | |
| li { | |
| list-style-type: none; | |
| font-size: 16pt; | |
| } | |
| .mail { | |
| margin: auto; | |
| padding-top: 10px; | |
| padding-bottom: 10px; | |
| width: 400px; | |
| background: #D8F1F8; | |
| border: 1px soild silver; | |
| } | |
| .mail h2 { | |
| margin-left: 38px; | |
| } | |
| input { | |
| font-size: 17pt; | |
| } | |
| input:focus, | |
| textarea:focus { | |
| background-color: lightyellow; | |
| } | |
| input submit { | |
| font-size: 12pt; | |
| } | |
| .rq { | |
| color: #FF0000; | |
| font-size: 10pt; | |
| } | |
| #result { | |
| margin-left: 10px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="mail"> | |
| <h2>Input a date [mm/dd/yyyy or mm-dd-yyyy format]</h2> | |
| <ul> | |
| <li> | |
| <input type='text' id='input' /> | |
| </li> | |
| <li> </li> | |
| <li class="submit"> | |
| <input type="submit" name="submit" value="Validate Date" onclick="ValidateDate()" /> | |
| </li> | |
| <li> </li> | |
| <li class="submit"> | |
| <input type="submit" name="submit" value="Reformat Date" onclick="reformatDate()" /> | |
| </li> | |
| <li> </li> | |
| </ul> | |
| <li id="result"></li> | |
| </div> | |
| <script> | |
| var matches; | |
| function isValidDate(date) { | |
| matches = /^(\d{1,2})[-\/](\d{1,2})[-\/](\d{2,4})$/.exec(date); | |
| if (matches == null) return false; | |
| var d = matches[1]; | |
| var m = matches[2] - 1; | |
| var y = matches[3]; | |
| var composedDate = new Date(y, m, d); | |
| return composedDate.getDate() == d && composedDate.getMonth() == m && composedDate.getFullYear() == y; | |
| } | |
| function ValidateDate() { | |
| var date = document.getElementById('input').value; | |
| if (isValidDate(date)) { | |
| document.getElementById('result').innerHTML = 'Date is Valid'; | |
| } | |
| else { | |
| document.getElementById('result').innerHTML = 'Date is InValid'; | |
| } | |
| } | |
| function reformatDate() { | |
| var date = document.getElementById('input').value; | |
| if (isValidDate(date)) { | |
| var res = (matches[0].indexOf('-') !== -1) ? matches[0].split("-").reverse().join("/") : matches[0].split("/").reverse().join("-"); | |
| document.getElementById('result').innerHTML = 'New Format : ' + res; | |
| } | |
| else { | |
| document.getElementById('result').innerHTML = 'Date is InValid'; | |
| } | |
| } | |
| </script> | |
| </body> | |
| </html> |
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