JS: jQuery 切换启用和禁用 | toggle disabled input

js-toggledisabled-input.js

// jQuery 切换启用和禁用表单项
(function ($) {
  $.fn.toggleDisabled = function() {
    return this.each(function() {
    var $this = $(this);
    if ($this.attr('disabled')) $this.removeAttr('disabled');
      else $this.attr('disabled', 'disabled');
    });
  };
})(jQuery);