vue在当前页面引入Js和css

mounted(){
    if (!document.getElementById('qiniuCss')) {  //避免多次引入
          const link = document.createElement('link');
          link.rel = 'stylesheet';
          link.href = 'http://sdk-release.qnsdk.com/qiniuplayer-0.3.9.min.css';
          link.id = 'qiniuCss';
          document.body.appendChild(link);
        }
        if (!document.getElementById('qiniuJs')) {  //避免多次引入
          const script = document.createElement('script');
          script.type = 'text/javascript';
          script.src = 'http://sdk-release.qnsdk.com/qiniuplayer-0.3.9.min.js';
          script.id = 'qiniuJs';
          document.body.appendChild(script);
        }
}