I am migrating my vue 2 application into vue 3. While exploring composition api, i came to know about ref function in setup hook which is replacing data function of option api.
In vue 2:
data() {
return {
cntmap: new Map()
}
}
I am not sure how to initialize it in ref function of setup hook. I have started learning vue 3.
Try like following snippet:
const { ref } = Vue
const app = Vue.createApp({
setup() {
const mapList = ref(new Map())
mapList.value.set('a', 1);
mapList.value.set('b', 2);
mapList.value.set('c', 3);
return { mapList }
}
})
app.mount('#demo')<script src="https://unpkg.com/vue@3.2.29/dist/vue.global.prod.js"></script>
<div id="demo">
<li v-for="item in mapList" :key="item">
{{ item }}
</li>
</div>