v-for 循环中的 Vue3 切换元素
Vue3 toggle element in v-for loop
我在 vue 3 中的 v-for 循环中遍历数组。有没有办法通过单击标题元素来切换段落的 v-show。下面是我的代码:
<div class="defs">
<ul v-for="(d, index) in definitions"
:key="'d' + index">
<li>
<div class="project" >
<div @click="showDetails" class="actions">
<h3>{{ d.title }}</h3>
<div class="icons">
<span class="material-icons" ><i class="fas fa-trash-alt"></i></span>
<span class="material-icons" ><i class="fas fa-pencil-alt"></i></span>
</div>
</div>
<div v-if="show" class="details">
<p>{{d.explanation}}</p>
</div>
</div>
</li>
</ul>
</div>
<script>
import { ref } from "vue";
import { projectDatabase} from '../../firebase/config'
export default {
props: ['id'],
setup(props){
const show = ref(false);
const showDetails = () =>{
show.value = !show.value
}
return {
definitions, props, show, showDetails,
}
}
}
</script>
我知道我们不能在合成中使用它 API。那么我们如何解决切换问题?
像下面的片段一样尝试,这里是 codesandbox with composition API
const demo = {
data() {
return {
definitions: [
{ title: "aaa", explanation: "aaa" },
{ title: "bbb", explanation: "bbb" },
{ title: "ccc", explanation: "ccc" },
],
show: null
}
},
methods: {
showDetails(idx) {
this.show === idx ? (this.show = null) : (this.show = idx);
}
},
// same code with coposition API
/*import { ref } from "vue";
import { projectDatabase} from '../../firebase/config'
setup() {
const show = ref(null);
const definitions = ref([
{ title: "aaa", explanation: "aaa" },
{ title: "bbb", explanation: "bbb" },
{ title: "ccc", explanation: "ccc" },
]);
const showDetails = (idx) => {
show.value === idx ? (show.value = null) : (show.value = idx);
};
return { definitions, show, showDetails }
},*/
};
Vue.createApp(demo).mount("#demo");
<script src="https://unpkg.com/vue@next"></script>
<link rel="stylesheet" href="https://pro.fontawesome.com/releases/v5.10.0/css/all.css" integrity="sha384-AYmEC3Yw5cVb3ZcuHtOA93w35dYTsvhLPVnYs9eStHfGJvOvKxVfELGroGkvsg+p" crossorigin="anonymous" />
<div id="demo">
<div class="defs">
<ul>
<li v-for="(d, index) in definitions" :key="index">
<div class="project">
<div @click="showDetails(index)" class="actions">
<h3>{{ d.title }}</h3>
<div class="icons">
<span class="material-icons"
><i class="fas fa-trash-alt"></i
></span>
<span class="material-icons"
><i class="fas fa-pencil-alt"></i
></span>
</div>
</div>
<div v-if="show === index" class="details">
<p>{{ d.explanation }}</p>
</div>
</div>
</li>
</ul>
</div>
</div>
我在 vue 3 中的 v-for 循环中遍历数组。有没有办法通过单击标题元素来切换段落的 v-show。下面是我的代码:
<div class="defs">
<ul v-for="(d, index) in definitions"
:key="'d' + index">
<li>
<div class="project" >
<div @click="showDetails" class="actions">
<h3>{{ d.title }}</h3>
<div class="icons">
<span class="material-icons" ><i class="fas fa-trash-alt"></i></span>
<span class="material-icons" ><i class="fas fa-pencil-alt"></i></span>
</div>
</div>
<div v-if="show" class="details">
<p>{{d.explanation}}</p>
</div>
</div>
</li>
</ul>
</div>
<script>
import { ref } from "vue";
import { projectDatabase} from '../../firebase/config'
export default {
props: ['id'],
setup(props){
const show = ref(false);
const showDetails = () =>{
show.value = !show.value
}
return {
definitions, props, show, showDetails,
}
}
}
</script>
我知道我们不能在合成中使用它 API。那么我们如何解决切换问题?
像下面的片段一样尝试,这里是 codesandbox with composition API
const demo = {
data() {
return {
definitions: [
{ title: "aaa", explanation: "aaa" },
{ title: "bbb", explanation: "bbb" },
{ title: "ccc", explanation: "ccc" },
],
show: null
}
},
methods: {
showDetails(idx) {
this.show === idx ? (this.show = null) : (this.show = idx);
}
},
// same code with coposition API
/*import { ref } from "vue";
import { projectDatabase} from '../../firebase/config'
setup() {
const show = ref(null);
const definitions = ref([
{ title: "aaa", explanation: "aaa" },
{ title: "bbb", explanation: "bbb" },
{ title: "ccc", explanation: "ccc" },
]);
const showDetails = (idx) => {
show.value === idx ? (show.value = null) : (show.value = idx);
};
return { definitions, show, showDetails }
},*/
};
Vue.createApp(demo).mount("#demo");
<script src="https://unpkg.com/vue@next"></script>
<link rel="stylesheet" href="https://pro.fontawesome.com/releases/v5.10.0/css/all.css" integrity="sha384-AYmEC3Yw5cVb3ZcuHtOA93w35dYTsvhLPVnYs9eStHfGJvOvKxVfELGroGkvsg+p" crossorigin="anonymous" />
<div id="demo">
<div class="defs">
<ul>
<li v-for="(d, index) in definitions" :key="index">
<div class="project">
<div @click="showDetails(index)" class="actions">
<h3>{{ d.title }}</h3>
<div class="icons">
<span class="material-icons"
><i class="fas fa-trash-alt"></i
></span>
<span class="material-icons"
><i class="fas fa-pencil-alt"></i
></span>
</div>
</div>
<div v-if="show === index" class="details">
<p>{{ d.explanation }}</p>
</div>
</div>
</li>
</ul>
</div>
</div>