生活没有模板，只需心灯一盏。 如果笑能让你释然，那就开怀一笑；如果哭能让你减压，那就让泪水流下来。如果沉默是金，那就不用解释；如果放下能更好地前行，就别再扛着。
一、引入 Vant UI
1、通过 npm 安装
npm i @vant/weapp -S --production
2、修改 app.json
将 app.json 中的 “style”: “v2” 去除，小程序的新版基础组件强行加上了许多样式，难以覆盖，不关闭将造成部分组件样式混乱。
3、构建 npm 包
打开微信开发者工具，点击 工具 -> 构建 npm，并勾选 使用 npm 模块 选项，构建完成后，即可引入组件。
二、页面与功能
1、页面实现
<!--index.wxml-->
<van-cell-group inset><van-cell title="上联" required title-width="3.2em"><input class="weui-input" maxlength="10" placeholder="春联对歌民安国泰" bindinput="onChangeValue1" /></van-cell><van-cell title="下联" required title-width="3.2em"><input class="weui-input" maxlength="10" placeholder="喜字成双花好月圆" bindinput="onChangeValue2" /></van-cell><van-cell title="横批" required title-width="3.2em"><input class="weui-input" maxlength="10" placeholder="国泰民安" bindinput="onChangeValue3" /></van-cell><van-cell required title-width="3.2em" title="字体" is-link value="{{font}}" bind:click="showFontsPopup" /><van-popup show="{{ showFonts }}" bind:close="onFontClose" round position="bottom" custom-style="height: 40%"><van-picker show-toolbar title="春联字体" columns="{{ fontsColumns }}" bind:cancel="onFontCancel" bind:confirm="onFontConfirm" default-index="{{ 0 }}" /></van-popup><van-cell required title-width="3.2em" title="方向" is-link value="{{direction}}" bind:click="showDirectPopup" /><van-popup show="{{ showDirect }}" bind:close="onDirectClose" round position="bottom" custom-style="height: 40%"><van-picker show-toolbar title="字体方向" columns="{{ directionColumns }}" bind:cancel="onDirectCancel" bind:confirm="onDirectConfirm" default-index="{{ 0 }}" /></van-popup></van-cell-group><van-button disabled="{{disabled}}" color="linear-gradient(to right, #FF6034, #EE0A24)" block size="large" bind:click="onSubmit">{{submitText}}</van-button><van-button disabled="{{previewDisabled}}" color="linear-gradient(to right, #4bb0ff, #6149f6)" block size="large" bind:click="onPreviewImage">预览图片</van-button><van-grid column-num="3" border="{{ false }}"><van-grid-item use-slot wx:for="{{localImgUrlArray}}" wx:key="index" bind:click="onImgTap" id="{{index}}" data-imgsrc="{{item}}"><image style="width: 100%; height: 90px;" src="{{item}}" mode="aspectFit">
