我在這里掙扎在 Vue/Vuetify 的斷點上應用條件
基本上我想說……如果陣列的長度能被2整除，那么MD=6，如果能被3整除，那么MD=12
<v-col cols="12"
:md="module.plannings.length % 2 === 0 ? 6 ? module.plannings.length % 2 === 0 ? 12 : 12"
v-for="planning in module.plannings"
:key="planning.id"
>
顯然我在這里用了錯誤的方式。正確的語法是什么？
uj5u.com熱心網友回復：
您可以制作計算屬性：
new Vue({
el: '#app',
vuetify: new Vuetify(),
data() {
return {
module: {id: 0, plannings: [0,1,2,3,4,5]}
}
},
computed: {
msize() {
return this.module.plannings.length % 2 === 0 ?
6 : this.module.plannings.length % 3 === 0 ?
12 : 12
}
}
})<link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/@mdi/[email protected]/css/materialdesignicons.min.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/vuetify.min.css" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui">
<div id="app">
<v-app>
<v-main>
<v-container>
<v-col cols="12"
:md="msize"
v-for="planning in module.plannings"
:key="planning.id"
>
{{planning}}
</v-col>
</v-container>
</v-main>
</v-app>
</div>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vuetify.js"></script>uj5u.com熱心網友回復：
正確的語法將是:md="plannings.length % 2 === 0 ? 6 : 12"
演示：
new Vue({
el: '#app',
vuetify: new Vuetify(),
data: () => ({
plannings: [{
id: 1
}, {
id: 2
}]
}),
});<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vuetify.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/vuetify.min.css"/>
<div id="app">
<v-row>
<v-col
:md="plannings.length % 2 === 0 ? 6 : 12"
v-for="planning in plannings"
:key="planning.id"
style="background-color: yellow"
>
{{ planning.id }}
</v-col>
</v-row>
</div>轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/480689.html
標籤：javascript Vue.js Vuejs2 Vuetify.js
下一篇：無法從子組件vue3.0接收事件