jQuery Validation - error placement

问题

I'm trying to use 'errorPlacement' from jQuery Validation DOCS:

$("#myform").validate({
  errorPlacement: function(error, element) {
     error.appendTo( element.parent("td").next("td") );
   },
   debug:true
 })

I want to place error before not valid input, but this does not work:

$("#myform").validate({
      errorPlacement: function(error, element) {
         error.appendTo( element.parent("form").prev("input") );
       },
       debug:true
     })

LIVE DEMO

Any help much appreciated!

回答1:

Since you want to insert the error message before the invalid element, use insertBefore():

errorPlacement: function(error, element) {
    error.insertBefore(element);
}

回答2:

Just put the part Where you want the error

<label for="[your checkbox id]" generated="true" class="error"></label>

Ex:

<label><input type="checkbox" name="checkbox" id="checkbox" value="1" > Checkbox content</label>
<label for="checkbox" generated="true" class="error"></label>

回答3:

Another option is...

  errorPlacement: function (error, element) {
    element.before(error);
  }

回答4:

I recommend to use a html template to specify the position and styling like so:

<input name="patient_gender" required>
<label for="patient_gender" class="validation_error_message help-block"></label>

and overwrite function for error placement

$.validator.setDefaults({
    errorPlacement: function(error, element) {
        var name = element.attr('name');
        var errorSelector = '.validation_error_message[for="' + name + '"]';
        var $element = $(errorSelector);
        if ($element.length) { 
            $(errorSelector).html(error.html());
        } else {
            error.insertAfter(element);
        }
    }
});

来源：https://stackoverflow.com/questions/6545964/jquery-validation-error-placement