# 2.2 首页背景（Background）
根据规范色，延展了首页的背景，可根据主色选择对应的渐变背景色。
# 实例
# 基础用法
<template>
<div class="wrapper">
<dof-minibar
title="设备"
:background-color="startColor"
text-color="#ffffff"
:left-button="leftButton"
@dofMinibarLeftButtonClicked="back"
right-text=""
></dof-minibar>
<scroller class="scroller" show-scrollbar="false" :offset-accuracy="20" :style="{ 'background-color': startColor }">
<dof-gradient :width="width" :height="height" :startColor="startColor" :endColor="endColor"></dof-gradient>
<div class="board-box">
<dof-board>
<dof-card class="m-b-10">
<div class="placeholder"></div>
</dof-card>
<dof-row class="m-b-10">
<dof-col>
<dof-card>
<div class="placeholder"></div>
</dof-card>
</dof-col>
<dof-col>
<dof-card>
<div class="placeholder"></div>
</dof-card>
</dof-col>
</dof-row>
<dof-row class="m-b-10">
<dof-col>
<dof-card>
<div class="placeholder"></div>
</dof-card>
</dof-col>
</dof-row>
<dof-row class="m-b-10">
<dof-col>
<dof-card>
<div class="placeholder"></div>
</dof-card>
</dof-col>
<dof-col>
<dof-card>
<div class="placeholder"></div>
</dof-card>
</dof-col>
</dof-row>
<dof-row class="m-b-10">
<dof-col>
<dof-card>
<div class="placeholder"></div>
</dof-card>
</dof-col>
</dof-row>
</dof-board>
</div>
<div class="h-300px"></div>
<dof-bottom-bar :tabGroups="tabTitles"></dof-bottom-bar>
</scroller>
</div>
</template>
<style scoped>
.wrapper {
/* background-color: #f9f9f9; */
position: relative;
}
.scroller {
position: relative;
flex: 1;
/* background-color: #267aff; */
/* background-image: linear-gradient(to top, #ffffff, #267aff); */
width: 750px;
height: 1500px;
padding-bottom: 160px;
}
.backgroundTopColor {
position: absolute;
top: -1000px;
width: 750px;
height: 1000px;
}
.board-box {
background-color: #f9f9f9;
}
.m-b-10 {
margin-bottom: 20px;
}
.h-300px {
width: 750px;
height: 0;
padding-bottom: 300px;
background-color: #f9f9f9;
}
.placeholder {
height: 160px;
}
</style>
<script>
import Title from 'src/_mods/title.vue'
import Category from 'src/_mods/catalog'
import {
DofMinibar,
DofGradient,
DofBoard,
DofRow,
DofCol,
DofCardGroup,
DofCard,
DofCardItem,
DofBottomBar
} from 'dolphin-weex-ui'
const modal = weex.requireModule('modal')
import nativeService from '@/service/nativeService.js'
module.exports = {
components: {
Title,
Category,
DofMinibar,
DofGradient,
DofBoard,
DofRow,
DofCol,
DofCardGroup,
DofCard,
DofCardItem,
DofBottomBar
},
data() {
return {
leftButton: 'http://dolphin-weex-dev.msmartlife.cn/cdn/images/header/icon_back_white@3x.png',
width: '750',
height: '700',
startColor: '',
endColor: '#F9F9F9',
tabTitles: [
{
type: 'power',
title: 'power',
text: '开关',
iconColor: '#f2f2f2',
disabled: false,
icon: 'http://dolphin-weex-dev.msmartlife.cn/cdn/images/sample/water_heater/calorifier_icon_on@3x.png'
}
]
}
},
mounted() {
let value = nativeService.getParameters('value') || '#267AFF'
this.height = 600
this.startColor = value
this.tabTitles[0]['iconColor'] = value
},
methods: {
back() {}
},
computed: {}
}
</script>
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