阻止你显示显示生产模式的消息
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

加入 Vue.config.productionTip = false;//屏蔽提示信息

Vue.config.productionTip = false;//屏蔽提示信息
new Vue({
        el:"#app",
        data:{
            flag:true
        }
    })