router.afterEach( ( to,from,next ) => {
setTimeout(()=>{
var _hmt = _hmt || [];
(function() {
//每次执行前,先移除上次插入的代码
document.getElementById('baidu_tj') && document.getElementById('baidu_tj').remove();
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?xxxx";
hm.id = "baidu_tj"
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm,s);
})();
},0);
} );