vue单页应用加百度统计代码（亲测有效）

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);
} );