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Unobtrusive validation is based on the idea that you don't do form validation until the form has been submitted by the user; once that's happened, if something is invalid on the form, then each field is immediately validated once the user has changed it.

What I want to do is trigger validation on a form element "unobtrusively" - that is, only validate the form element if the user has already tried to submit the form. So I can trigger the validation of an element (I do it when a certain checkbox is changed) like so:

$('#chkNoPersonId').change(function(){
    $('#lstPersonId').valid();
});

But the trouble is that that will always cause lstPersonId to be validated and an error displayed when invalid, even if the user hasn't yet submitted the form once. I want it to only be validated once the user has tried to submit the form. Is there some value I can check to see whether the user has tried to submit the form yet, or some other way I can achieve this behaviour?

Unobtrusive validation is based on the idea that you don't do form validation until the form has been submitted by the user; once that's happened, if something is invalid on the form, then each field is immediately validated once the user has changed it.

What I want to do is trigger validation on a form element "unobtrusively" - that is, only validate the form element if the user has already tried to submit the form. So I can trigger the validation of an element (I do it when a certain checkbox is changed) like so:

$('#chkNoPersonId').change(function(){
    $('#lstPersonId').valid();
});

But the trouble is that that will always cause lstPersonId to be validated and an error displayed when invalid, even if the user hasn't yet submitted the form once. I want it to only be validated once the user has tried to submit the form. Is there some value I can check to see whether the user has tried to submit the form yet, or some other way I can achieve this behaviour?

• javascript
• jquery
• jquery-validate
• validation

Share Improve this question Follow asked May 24, 2013 at 11:42 JezJez 30.1k3636 gold badges154154 silver badges255255 bronze badges 1

• 1 altough I don't get your question right I try to guess. There is a submit() eventhandler which can be used like this: $('#myForm').submit(function(){ //Do stuff once the form has been submitted }); – thpl Commented May 24, 2013 at 11:49

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2 Answers 2

Sorted by: Reset to default 5

You can add a flag on submit button to identify form submit has been already clicked or not. ex:

$('#submitButn').click(function(){
   $(this).attr('data-submitted','true');
});

Than in each validation of input check weather that flag is true or not and perform your validation logic.

$('#chkNoPersonId').change(function(){
  if( $('#submitButn').attr('data-submitted')=='true'){
   $('#lstPersonId').valid();
  }
});

On clear or reset of form you can remove that attribute

 $('#submitButn').removeAttr('data-submitted');

Have you tried using using the submit event handler?

$("form").submit(function() {
    //validate here
});

source: http://api.jquery./submit/

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