禁止form重复提交

 $("form").submit(function () {
             console.log("提交了");
             $("input:submit").attr("disabled", "true");
             setTimeout(function () {
                 $("input:submit").removeAttr("disabled");
             }, 3000);
         });

网上看到老外写的

 // jQuery plugin to prevent double submission of forms
 jQuery.fn.preventDoubleSubmission = function() {
   $(this).on('submit', function(e) {
     var $form = $(this);

     if ($form.data('submitted') === true) {
       // Previously submitted - don't submit again
       e.preventDefault();
     } else {
       // Mark it so that the next submit can be ignored
       $form.data('submitted', true);
     }
   });

   // Keep chainability
   return this;
 };

 //Use it like this
 $('form').preventDoubleSubmission();