this.$store.state.count: {{ this.$store.state.count }}
调用computed(halfCount): {{ halfCount }}
this.$store.getters.doubleCount: {{ this.$store.getters.doubleCount }}
this.$store.getters.moreCount(10): {{ this.$store.getters.moreCount(10) }}
this.$store.commit('increment', {num: 7})}:
this.$store.commit({type: "increment", num: 5})}:
this.$store.dispatch('inc_actions', {num: 7})}:
this.$store.dispatch({type: 'inc_actions', num: 5})}: