1.獲取當前url中的id
var str = location.href;//獲取完整的url var cateid = str.substring(81);//取到id
2.switch ..case判斷
switch(cateid) { case '17': $('#tab4').tab({ defaultIndex: 0, activeClass: "tab-blue " }); break; case '18': $('#tab4').tab({ defaultIndex: 1, activeClass: "tab-blue " }); break; case '19': $('#tab4').tab({ defaultIndex: 2, activeClass: "tab-blue " }); break; case '20': $('#tab4').tab({ defaultIndex: 3, activeClass: "tab-blue " }); break; case '21': $('#tab4').tab({ defaultIndex: 4, activeClass: "tab-blue " }); break; }