vuetify.js - 如何在 Vuetify 中使用断点为不同的屏幕尺寸指定不同的边距

Question

我有一个循环显示指定数量的卡片。

问题出在 ma-5 <v-flex> 中的属性。上xs屏幕尺寸这个边距太大了。如何为不同的屏幕尺寸指定不同的边距？

代码:

   <v-container>
      <v-layout row wrap>
        <v-flex xs12 sm6 md4 ma-5 v-for="card in filteredCards" :key="card.id">
          <v-card flat class="elevation-20 test">
            <v-card-media :src="card.image" height="200px">
            </v-card-media>
            <v-card-title primary-title class="pa-4">
               <div>
                  <h3 class="headline mb-0">{{card.title}}</h3>
                  <div style="min-height:50px;">{{card.description}}</div>
               </div>
            </v-card-title>
          </v-card>
        </v-flex>
      </v-layout>
   </v-container>

我尝试过的:

<小时/>

我在下面添加了此代码(从 this 页面复制)

<v-flex xs12 sm6 md4 v-for="card in filteredCards" :key="card.id"
   :class="{'ma-0': $breakpoint.smAndDown, 'ma-5': $breakpoint.mdAndUp}">

我收到这些错误:

[Vue warn]: Property or method "$breakpoint" is not defined on the instance but referenced during render

[Vue warn]: Error in render: "TypeError: Cannot read property 'smAndDown' of undefined"

TypeError: Cannot read property 'smAndDown' of undefined

<小时/>

Answer 1

$vuetify.breakpoint.smAndDown

注意$vuetify

就您而言:

<v-flex 
    v-for="card in filteredCards"
    :key="card.id"
    :class="{'ma-0': $vuetify.breakpoint.smAndDown, 'ma-5': $vuetify.breakpoint.mdAndUp}"
    xs12 sm6 md4  
>

检查docs (断点对象)