Is there a way to expand and collapse all el-collapse-items from the ElementPlus Vue3 Library using just one button in this code snippet?
<template>
<div class="demo-collapse">
<el-collapse v-model="activeName" accordion>
<el-collapse-item title="Consistency" name="1">
<script lang="ts" setup>
import { ref } from 'vue'
const activeName = ref('1')
</script>
Kindly take a look at the code snippet below:
const { ref } = Vue
const app = Vue.createApp({
setup() {
const items = ref([{id: 1, title: "first", text: "aaaaaaaaaaaa"}, {id: 2, title: "second", text: "bbbbbbbbbbbb"}, {id: 3, title: "third", text: "ccccccccccc"}])
const activeName = ref([1]);
const toggleAll = () => {
activeName.value = activeName.value.length === items.value.length
? []
: items.value.map(i => i.id)
}
return { items, activeName, toggleAll };
},
})
app.use(ElementPlus);
app.mount('#demo')<link rel="stylesheet" href="//unpkg.com/element-plus/dist/index.css" />
<script src="//unpkg.com/vue@3"></script>
<script src="//unpkg.com/element-plus"></script>
<div id="demo">
<div class="flex justify-space-between mb-4 flex-wrap gap-4">
<el-button type="primary" text bg @click="toggleAll">toggle all</el-button>
</div>
<div class="demo-collapse">
<el-collapse v-model="activeName" accordion>
<el-collapse-item v-for="item in items" :key="item.id" :title="item.title" :name="item.id">
<div>
{{ item.text }}
</div>
</el-collapse-item>
</el-collapse>
</div>
</div>It is not possible to achieve this while using the accordion mode. According to the documentation:
In accordion mode, only one panel can be expanded at a time
To overcome this limitation, you need to remove the accordion prop and modify the value of activeName to an array, as shown in the documentation:
const activeNames = ref(['1'])
If you want to expand or collapse all items, you can create a function that updates the activeNames with all the names of the el-collapse-item components or clears it, for example:
toggleElements() {
if(activeName.value.length) {
activeName.value = [];
} else {
activeName.value = ['1', '2', '3', ...];
}
}
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