Vue global event bus
A way to communicate between components, suitable for any component communication
Install the global event bus
new Vue({
beforeCreate(){
Vue.prototype.$bus=this //$bus就是当前应用的vm
｝
})
Use the event bus:
1. Receive data: A component wants to receive data, then bind a custom event to $bus in the A component, and the callback of the event is left in the A component itself
methods:{
demo(data){
}
}
mounted(){
this.$bus.$on(‘xxxx’,this.demo)
}
provide data:this.$bus.$emit(‘xxxx’,数据）
It is best to use $off in the beforeDestroy hook to unbind the events used by the current component