js: jQuery 预防对表单进行多次提交 | disabled onsubmit

js-disabledonsubmit.js

// jQuery 预防对表单进行多次提交
$(function() {
  $('form').submit(function() {
    if(typeof jQuery.data(this, "disabledOnSubmit") == 'undefined') {
      jQuery.data(this, "disabledOnSubmit", { submited: true });
      $('input[type=submit], input[type=button]', this).each(function() {
        $(this).attr("disabled", "disabled");
      });
      return true;
    } else {
      return false;
    }
  });
});