uni-app v-for循环遍历 动态切换class、动态切换style

 动态切换class，主要代码：:class="i.themColor" 

<view  v-for="i in htmlJSON" class="column" :class="i.themColor"  >
    <view class="uni-flex uni-column line">
        <view class="flex-item flex-item-V uni-bg-red">
            <view class="flex-item left">
                <view class="title">{{i.title}}</view>
                <view class="txt">{{i.txt}}</view>
            </view>
        </view>
    </view>
</view>
 
 
<script> import common from '../../common/common.js'; export default { data() { return { htmlJSON:common.kdtHomeHtmlJSON } }, methods: { }, mounted() { } } </script>
 
<style lang="scss">
    // body
 .content{ width: 750upx; height: 634upx; } // 内容：
 .colorA268D4{ background:#A268D4 url(../../static/images/kdt/icon-test.png) no-repeat 530upx 45upx; background-size: 125upx; } .colorFA5E8A{ background:#FA5E8A url(../../static/images/kdt/icon-.png) no-repeat 530upx 45upx; background-size: 125upx; } .color58C4CC{ background:#58C4CC url(../../static/images/kdt/icon-curriculum.png) no-repeat 530upx 45upx; background-size: 125upx; } .color7E8FEF{ background:#7E8FEF url(../../static/images/kdt/icon-family.png) no-repeat 530upx 45upx; background-size: 125upx; } .column { width: 702upx; height: 182upx; margin:17upx auto; padding-left: 25upx; padding-top: 35upx; line-height: 42upx; letter-spacing: 4upx; border-radius: 10upx; .title{ color: #ffffff; font-size: 31upx; } .txt{ width: 426upx; font-size: 25upx; color: #E6E6E6 } } </style>
 
//commom.js
export default { kdtHomeHtmlJSON:[{ title:'体测数据录入', txt:'体测数据现场“录入+上传”，一步到位！', themColor:'colorA268D4' }, { title:'入园师训', txt:'提升幼师对于体育与运动领域基本知识，基本技能，实践操做能力', themColor:'colorFA5E8A' }, { title:'体能课程', txt:'提高幼师对于体育与运动领域基本知识，基本技能，实践操做能力', themColor:'color58C4CC' }, { title:'家长工做', txt:'确保每位家长都能收到孩子的体能成果', themColor:'color7E8FEF' }] }

 

 动态切换style，主要代码： :style="{'background':item.TypeColor}"

<!-- 体测 -->
        <view class="block"  v-for="itemList in list">
            <view class="title">
                <view class="title-word"> {{itemList[0].TypeName}} </view>
            </view>
            <view class="content" v-for="(item,index) in itemList" :key="index">
                <!-- 日历选择器 -->
                <picker mode="date" :value="item.BookTime"  @change="bindDateChange($event,item)">
                    <view class="book left" v-if="!item.BookTime">
                        <image src="../../static/images/icon-calendar.png" mode=""></image>
                        <view class="text"> 预定 </view>
                    </view>
                    <view class="booked left" v-else  >
                        <text>{{item.BookTimeTxt}}</text>
                        <image src="../../static/images/icon-calendar.png" mode=""></image>
                    </view>
                </picker>
                <!-- 分割西线 -->
                <view class="break left" >
                    <view class="break-line-pe left" :style="{'background': item.TypeColor}"></view>
                </view>
                <!-- 题目 -->
                <view class="message-pe left" :style="{'background': item.TypeColor}">
                    <view class="message-info nowrap"> {{item.Name}} </view>
                </view>
            </view>
            <view class="box"></view>
        </view>
 
<script>
 this.list={ "2":[ { "Id":1657, "CreateTime":"2019-01-26T15:05:40.5970000", "ServiceUnitId":2004, "ServiceMetadataId":5, "LikedCount":0, "Type":2, "Status":false, "ContentId":81, "Name":"森林运动会", "TypeName":"课程", "TypeColor":"#68CDD4" }, Object{...}, Object{...}, Object{...} ], "3":[ Object{...}, Object{...} ], "4":[ Object{...}, Object{...} ] } <script>

 

说明：为节约性能，将 Class 与 Style 的表达式经过 compiler 硬编码到 uni-app 中，支持语法和转换效果以下：

class 支持的语法:

<view :class="{ active: isActive }">111</view>
<view class="static" v-bind:class="{ active: isActive, 'text-danger': hasError }">222</view <view class="static" :class="[activeClass, errorClass]">333</view>
<view class="static" v-bind:class="[isActive ? activeClass : '', errorClass]">444</view>
<view class="static" v-bind:class="[{ active: isActive }, errorClass]">555</view>

style 支持的语法:

<view v-bind:style="{ color: activeColor, fontSize: fontSize + 'px' }">666</view>
<view v-bind:style="[{ color: activeColor, fontSize: fontSize + 'px' }]">777</view>

不支持 Vue官方文档：Class 与 Style 绑定 中的 classObject 和 styleObject 语法。

此外还能够用 computed 方法生成 class 或者 style 字符串，插入到页面中，举例说明：

<template>
    <!-- 支持 -->
    <view class="container" :class="computedClassStr"></view>
    <view class="container" :class="{active: isActive}"></view>
    <!-- 不支持 -->
    <view class="container" :class="computedClassObject"></view>
</template>

动态菜单切换示例

<template>
 <scroll-view class="menus">
  <view v-for="(menu, index) in menus" :class="[index == currentIndex ? 'menuActive' : '']">{{menu}}</view>
 </scroll-view>
</template>
 
<script> export default { data: { currentIndex : 0, menus : [ '新闻', '汽车', '读书' ] }, onLoad:function(options){ console.log("onLoad"); }, onHide:function(){ console.log("onHide"); }, onShow:function(){ console.log("onShow"); } } </script>
 
<style> .menus{width:700px; margin:0 auto; padding:20px 0px;} .menus view{padding:8px; line-height:20px; font:38px; float:left;} .menuActive{color:#900;} </style>