CODEWITHSUNDEEP
javascripthtmlforms
Mateus Viccari
Mateus Viccari

Reputation: 7709

Detect type of submit, if it was by enter key or button click

I have the following code:

    <head>
        <script language="javascript">
            function subimiti(event){
                alert("Tipo do submit: "+event);
            }
        </script>
    </head>
    <body>
        <form id="f1" name="form1" onsubmit="subimiti(event)" action="http://www.google.com">
            <input type="text" id="meuId" value="Teste"/>
            <input id="butao" type="submit" value="Subimeta u fórmi trem bão!!"/>
        </form>

In my JavaScript function I want to detect the event that causes the form submit. If it was by an enter key in my text field, or if it was by clicking on the button.

Upvotes: 14

Views: 7311

Answers (1)

Fabi
Fabi

Reputation: 973

Since the keypress event fires the click event when there's a submit button, the only workaround that I can think of is having a type=button instead.

Pure javascript (Fiddle):

<form id="f1" name="form1" action="" onsubmit="subimiti(this)" method="POST">
  <input type="text" id="meuId" value="Test" onkeypress="setEvent(event)"/>
  <input id="butao" type="button" onclick="setEvent(event)" value="Subimeta u formi trem bao!!"/>
</form>

function subimiti(form)
{
  event.preventDefault();
  alert(form.getAttribute('event'));   

}

function setEvent(event)
{
 if(event.type == 'click')
 {
   document.form1.setAttribute('event','click');
   subimiti(document.form1);
 }
 else if (event.keyCode == 13)
 {
   document.form1.setAttribute('event','keypress');
 }
}

Using jQuery (cleaner/easier code in my opinion):

$(function(){
  $('form').submit(function(){
    alert($(this).attr('event'));
  });

  $("input#butao").on('click', function(e) {
    $("form").attr("event", "click").submit();
  });      

  $("input").on('keypress', function(e) {
    if (e.which == 13)
    {
      $("form").attr("event", "keypress");
    }
  });            
});

There's a click listener for butao only and enter listener for any input.

<form id="f1" name="form1" action="">
  <input type="text" id="meuId" value="Teste"/>
  <input id="butao" type="button" value="Subimeta u formi trem bao!!"/>
</form>

Fiddle (added preventDefault to fiddle so you could see the results without actually submitting)

Upvotes: 5

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