安装Vuex4.0以上版本
npm install vuex@4.0.0 -s
在src
目录下新建store/index.js
文件夹
import {
createStore
} from 'vuex';
export default createStore({
state: {
num: 123
}
});
在main.js
引入
import {
createApp
} from 'vue'
import App from './App.vue'
import vuex from './store'
const app = createApp(App)
app.use(vuex)
app.mount('#app')
组件引入
<script>
import { onMounted } from "vue";
import { useStore } from "vuex";
export default {
setup() {
const store = useStore();
onMounted(() => {
console.log(store.state.num);
});
},
};
</script>