It's been a while since using Vue JS and I am currently attempting to render a list of data with a button for each record. When the button is clicked, I would like to conditionally render a component ( in this instance).
Is there a Vue approved way of doing this? Should I be manipulating the DOM? The following doesn't seem to work.
<template>
<div v-for="data in list">
{{ data.bar}}
<button @click="handleClick">
<div v-if="dataset.loading === 'true'">
<loader/>
</div>
<div v-else>
</button>
</div>
</template>
<script setup>
import { loader } from './components'
const list = [{ foo: 'bar'}];
const handleClick = (el) => {
el.dataset.loading = 'true';
setTimeout(3, () => el.dataset.loading = 'false');
};
</script>
Observation :
bar
key in the list
array. Use data.foo
instead of data.bar
.Suggestions :
It is recommended to provide a :key
with v-for
whenever possible.
Add loading
property in each object of the list array. So that it will behave dynamically while setting the value onClick
.
Live Demo :
new Vue({ el: '#app', data: { list: [{ foo: 'bar', loading: false }] }, methods: { handleClick(dataIndex) { this.list[dataIndex].loading = true; setTimeout(() => { this.list[dataIndex].loading = false; }, 2000); } } })
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script> <div id="app"> <div v-for="(data, index) in list" :key="index"> {{ data.bar }} <button @click="handleClick(index)"> <div v-if="data.loading"> Loading Start </div> <div v-else> Loading Finish </div> </button> </div> </div>
You need to use ref
on your list
variable to make it reactive. Also, you are accessing a dataset
variable which doesn't exists in your application.
This is one way of doing it, I just added an extra data on your list
<script setup>
import {ref} from 'vue'
let list = ref([{ foo: 'bar', loading: 'true'}]);
const handleClick = (data) => {
setTimeout(() => {
data.loading = 'false'
},1000);
};
</script>
<template>
<div v-for="data in list" >
{{ data.foo}}
<button @click="handleClick(data)"> //you can also use a `ref` here.
<div v-if="data.loading === 'true'">
Your Loader Component
</div>
<div v-else>
Something else...
</div>
</button>
</div>
</template>
You can also use Template Refs
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