How to prevent submitting the HTML form’s input field value if it empty

by

This can only be done through JavaScript, as far as I know, so if you rely on this functionality you need to restructure. The idea, anyway, is to remove the name attribute from inputs you don’t want included:

jQuery:

$('#my-form-id').submit(function () {
    $(this)
        .find('input[name]')
        .filter(function () {
            return !this.value;
        })
        .prop('name', '');
});

No jQuery:

var myForm = document.getElementById('my-form-id');

myForm.addEventListener('submit', function () {
    var allInputs = myForm.getElementsByTagName('input');

    for (var i = 0; i < allInputs.length; i++) {
        var input = allInputs[i];

        if (input.name && !input.value) {
            input.name="";
        }
    }
});

You might also want to reset the form afterwards, if you use a listener and cancel.

More Related Contents:

  1. How to prevent form from being submitted?
  2. Stop form refreshing page on submit
  3. Clearing using jQuery
  4. HTML5 form required attribute. Set custom validation message?
  5. Set the value of an input field
  6. Adding input elements dynamically to form
  7. How to avoid the need for ctrl-click in a multi-select box using Javascript?
  8. Prevent form redirect OR refresh on submit?
  9. HTML form action and onsubmit issues
  10. Intercept a form submit in JavaScript and prevent normal submission
  11. Drop-down box dependent on the option selected in another drop-down box
  12. How to set a Header field on POST a form?
  13. Change the content of a div based on selection from dropdown menu
  14. Appending form input value to action url as path
  15. jQuery Change event on an element – any way to retain previous value?
  16. How to save data from a form with HTML5 Local Storage?
  17. HTML form with two submit buttons and two “target” attributes
  18. Submit form after calling e.preventDefault()
  19. Getting an option text/value with JavaScript
  20. How to use JavaScript to change the form action [duplicate]
  21. Change value of input and submit form in JavaScript
  22. Why does a FORM with one text INPUT submit on enter while one with two text INPUTs does not? [duplicate]
  23. Check if input is number or letter javascript
  24. Submit pdf form fields to a HTTP POST request
  25. form with no action and where enter does not reload page
  26. copying the value of a form’s file input field to another form’s input field
  27. A form’s “action” and “onsubmit”: Which executes first?
  28. Show/hide password onClick of button using Javascript only
  29. adding onclick event to dynamically added button?
  30. Form submit button will not submit when name of button is “submit” [duplicate]

Leave a Comment