there are three routing components in a page: the created method is called only when the routing component jumps in for the first time. Is there a method that will be called automatically every time you jump to this routing page?
there are three routing components in a page: the created method is called only when the routing component jumps in for the first time. Is there a method that will be called automatically every time you jump to this routing page?
beforeRouteEnter
beforeRouteUpdate (2.2 )
beforeRouteLeave 
write mounted in a subcomponent or use the vue-router hook function
is it possible that this requirement needs to listen for routing changes to handle the corresponding changes?
watch: {
$route() {
// do somethings ...
}
}every time you jump to this routing page, isn't watch listening on the route?
watch: {
$route(to,from){
// to => route
// from => route
this._getData(); // todo
}
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