jQuery: how to get which button was clicked upon f-第2页回答

I have a .submit() event set up for form submission. I also have multiple forms on the page, but just one here for this example. I'd like to know which submit button was clicked without applying a .click() event to each one.

Here's the setup:

<html>
<head>
  <title>jQuery research: forms</title>
  <script type='text/javascript' src='../jquery-1.5.2.min.js'></script>
  <script type='text/javascript' language='javascript'>
      $(document).ready(function(){
          $('form[name="testform"]').submit( function(event){ process_form_submission(event); } );
      });
      function process_form_submission( event ) {
          event.preventDefault();
          //var target = $(event.target);
          var me = event.currentTarget;
          var data = me.data.value;
          var which_button = '?';       // <-- this is what I want to know
          alert( 'data: ' + data + ', button: ' + which_button );
      }
  </script>
</head>
<body>
<h2>Here's my form:</h2>
<form action='nothing' method='post' name='testform'>
  <input type='hidden' name='data' value='blahdatayadda' />
  <input type='submit' name='name1' value='value1' />
  <input type='submit' name='name2' value='value2' />
</form>
</body>
</html>

Live example on jsfiddle

Besides applying a .click() event on each button, is there a way to determine which submit button was clicked?

标签： jquery forms

23条回答

只靠听说

2楼-- · 2018-12-31 18:18

Wow, some solutions can get complicated! If you don't mind using a simple global, just take advantage of the fact that the input button click event fires first. One could further filter the $('input') selector for one of many forms by using $('#myForm input').

    $(document).ready(function(){
      var clkBtn = "";
      $('input[type="submit"]').click(function(evt) {
        clkBtn = evt.target.id;
      });

      $("#myForm").submit(function(evt) {
        var btnID = clkBtn;
        alert("form submitted; button id=" + btnID);
      });
    });

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大哥的爱人

3楼-- · 2018-12-31 18:20

$("form input[type=submit]").click(function() {
    $("<input />")
        .attr('type', 'hidden')
        .attr('name', $(this).attr('name'))
        .attr('value', $(this).attr('value'))
    .appendTo(this)
});

add hidden field

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墨雨无痕

4楼-- · 2018-12-31 18:20

It helped me https://stackoverflow.com/a/17805011/1029257

Form submited only after submit button was clicked.

var theBtn = $(':focus');
if(theBtn.is(':submit'))
{
  // ....
  return true;
}

return false;

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看风景的人

5楼-- · 2018-12-31 18:23

This one worked for me

$('#Form').submit(function(){
var btn= $(this).find("input[type=submit]:focus").val();
alert('you have clicked '+ btn);

}

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ら面具成の殇う

6楼-- · 2018-12-31 18:25

I have found the best solution is

$(document.activeElement).attr('id')

This not only works on inputs, but it also works on button tags. Also it gets the id of the button.

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公子世无双

7楼-- · 2018-12-31 18:25

This is the solution used by me and work very well:

// prevent enter key on some elements to prevent to submit the form
function stopRKey(evt) {
  evt = (evt) ? evt : ((event) ? event : null);
  var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
  var alloved_enter_on_type = ['textarea'];
  if ((evt.keyCode == 13) && ((node.id == "") || ($.inArray(node.type, alloved_enter_on_type) < 0))) {
    return false;
  }
}

$(document).ready(function() {
  document.onkeypress = stopRKey;
  // catch the id of submit button and store-it to the form
  $("form").each(function() {
    var that = $(this);

    // define context and reference
    /* for each of the submit-inputs - in each of the forms on
			 the page - assign click and keypress event */
    $("input:submit,button", that).bind("click keypress", function(e) {
      // store the id of the submit-input on it's enclosing form
      that.data("callerid", this.id);
    });
  });

  $("#form1").submit(function(e) {
    var origin_id = $(e.target).data("callerid");
    alert(origin_id);
    e.preventDefault();

  });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<form id="form1" name="form1" action="" method="post">
  <input type="text" name="text1" />
  <input type="submit" id="button1" value="Submit1" name="button1" />
  <button type="submit" id="button2" name="button2">
    Submit2
  </button>
  <input type="submit" id="button3" value="Submit3" name="button3" />
</form>

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jQuery: how to get which button was clicked upon f

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