Filter Form Parameters Before Submitting

Question

Is there a way to check the parameter if its empty or not before submitting?

Answer 1

Using pure javascript, it would be something like - (untested)

var form = document.forms[0];
form.onsubmit=function(){
    var inputs, index;
    inputs = document.getElementsByTagName('input');
    for (index = 0; index < inputs.length; ++index) {
         if(inputs[index].value == ''){
            form.removeChild(inputs[index]);
         }
    }
}

Using jQuery, it would be something like - (untested)

$('form').submit(function() {
     $('input').each(function(){
        if($(this).val() == ''){
           $(this).remove();
        }
     });
});