JS 禁用和重新启用a标签的点击事件

 function changeHomePageModule(){
          var css = $(\'#collapseExample\').attr(\'class\');
          if(css==\'collapse\'){
              $("a:not([href=\'#collapseExample\'])").click(function(event) {
                  event.stopPropagation();
                  event.preventDefault();
                    // return false相当于event.stopPropagation() + event.preventDefault()
                });
          }else{
              $("a:not([href=\'#collapseExample\'])").click(function(e) {
                  window.event.returnValue = true;
                });
          }
          
            $(\'.gridster ul\').css("background-color","#EFEFEF"); 
      }