如何获得触发功能的事件？

Question

Suppose that I've this:

<form onsubmit="Popup(this)">

when I press the submit button the Popup function is fired. How can I get the submit event and prevent it?

Popup: function(item)

Thanks.

Answer 1

try this:

function( item ) {
  alert( "Handler for .submit() called." );
  item.preventDefault();
  // rest of the code
}

OR

    $("#form_id").validate({
        submitHandler: function (form) {
            // do code
            return false;
    }})

Answer 2

Since you tagged your question with jQuery.

$('form').submit(Popup); //this inside the function is the form.
                         // The first parameter is the event.

And make sure to return false from Popup

If Popup isn't a constructor, use camelCase naming

Answer 3

Your existing code should work if you just modify it just a bit. Add return to your Popup method call

<form onsubmit="return Popup(this)">

And at the end of your method declaration add return false

Popup: function(item){
           // your code goes here
           return false; //add this
       }