Created
July 27, 2012 23:16
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Validate client-side with dataset property
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| <html> | |
| <head> | |
| <title>Data Error Message Sandbox</title> | |
| <script type="text/javascript"> | |
| function checkForm() { | |
| var myformelement = document.getElementById('myformelement'); | |
| var usermessage = document.getElementById('usermessage'); | |
| if (myformelement.value == "") { | |
| try { | |
| alert(myformelement.dataset.errorMessage); | |
| usermessage.innerHTML = "dataset"; | |
| } | |
| catch(err) { | |
| try { | |
| alert(myformelement.getAttribute('data-error-message')); | |
| usermessage.innerHTML = "getAttribute"; | |
| } | |
| catch(err) { | |
| alert("Invalid data"); | |
| usermessage.innerHTML = "basicAlert"; | |
| } | |
| } | |
| return false; | |
| } | |
| else { | |
| return true; | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <div id="usermessage"></div> | |
| <form id="myform" name="myform" method="post" action="" onsubmit="return checkForm();"> | |
| <label for="myformelement">My Form Element</label> | |
| <input type="text" id="myformelement" name="myformelement" value="" data-error-message="Invaid data in 'My Form Element'" /> | |
| <input type="submit" id="btnsubmit" name="btnsubmit" value="Submit" /> | |
| </form> | |
| </body> | |
| </html> |
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