引用Vue的CDN文件的时候控制台会提示：

隐藏：You are running Vue in development mode.
Make sure to turn on production mode when deploying for production.
See more tips at https://vuejs.org/guide/deployment.html

解决控制台：You are running Vue in development mode. Make sure to turn on production mode when deploying_Vue


只需要添加一行代码就可以解决，自己表示看着不舒服，哈哈哈，用cli创建项目那些就不存在了

Vue.config.productionTip =false;

解决控制台：You are running Vue in development mode. Make sure to turn on production mode when deploying_html_02


提示消息的第一条需要安装拓展程序​​Vue Devtools​​。