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在Vue3中使用全局事件总线,$on,$off等功能
npm install vue3-emitter-zk// main.js
const emitter = require('vue3-emitter-zk')
let Vue = createApp(App)
Vue.config.globalProperties.$emitter = emitter // 引入全局变量
Vue.mount('#app')// vue组件
this.$emitter.$on('name',(name,age) => {
console.log(`我叫${name},今年${age}岁`)
})// vue组件
this.$emitter.$emit('name','lihua',20) // 可以传多个参数// vue组件
this.$emitter.$off('name')