【前端 Uniapp】使用Vant打造Uniapp项目（避坑版）

一、基本介绍

Uniapp 是基于 Vue.js 的开发框架，通过一套代码可以同时发布到多个平台的应用框架。而 Vant 是针对移动端 Vue.js 的组件库。通过这样的组合，我们可以快速构建出一个跨平台的移动应用。Vant 已经支持多种小程序和 H5 平台，也对 Uniapp 实现了完美的支持。我们可以使用 Vant 提供的丰富的组件和功能，来快速开发一个漂亮、易用的移动应用。

二、安装 Vant 组件

1. HBuilder X中新建一个uni-app的项目

1、添加项目名称，选择文件路径
2、选择默认模板
3、Vue版本选择（若无其他需求，点击创建即可）

注意：
项目名不能有空格；不能出现开头大写；不能用中文命名

2. HBuilder X提示项目创建成功，在HBuilder X用命令行窗口打开创建的项目（或直接在创建的项目文件夹内用cmd指令打开）

3. 输入npm init -y 指令，创建项目配置文件（即package.json）；

4. 输入npm i @vant/weapp -S --production下载vant

安装完成后，项目中会多出一个依赖项，也代表安装成功

5. 在项目的根路径下，创建 wxcomponents 目录，并将依赖项（node_modules）中@vant文件夹下的dist复制到wxcomponents，并修改文件夹名为vant;（主要是为了方便查看和引用）

6. 在pages.json中注册并引入组件

7.

找到 App.vue ，引入公共组件样式

先运行一下：

报错：

这是因为引入 vant 组件的时候识别样式，vant-icon 发生了错误，改一下就可以。

这里发生错误的第一编号是

iv4v8nulyz. 

可以自己仔细看看，每个人会有不同，如果查找到的话

/vant/wxcomponents/vant/icon/index.wxss

找到这个地方
然后再第二个和第三个URL前面加一个空格（英文状态下），关掉刷新一下，再重新打开 Hbuild.

以下为组件的全局注册，可根据需求按需导入组件：

"usingComponents":{"van-action-sheet":"/wxcomponents/vant/action-sheet/index","van-area":"/wxcomponents/vant/area/index","van-button":"/wxcomponents/vant/button/index","van-card":"/wxcomponents/vant/card/index","van-cell":"/wxcomponents/vant/cell/index","van-cell-group":"/wxcomponents/vant/cell-group/index","van-checkbox":"/wxcomponents/vant/checkbox/index","van-checkbox-group":"/wxcomponents/vant/checkbox-group/index","van-col":"/wxcomponents/vant/col/index","van-dialog":"/wxcomponents/vant/dialog/index","van-field":"/wxcomponents/vant/field/index","van-goods-action":"/wxcomponents/vant/goods-action/index","van-goods-action-icon":"/wxcomponents/vant/goods-action-icon/index","van-goods-action-button":"/wxcomponents/vant/goods-action-button/index","van-icon":"/wxcomponents/vant/icon/index","van-loading":"/wxcomponents/vant/loading/index","van-nav-bar":"/wxcomponents/vant/nav-bar/index","van-notice-bar":"/wxcomponents/vant/notice-bar/index","van-notify":"/wxcomponents/vant/notify/index","van-panel":"/wxcomponents/vant/panel/index","van-popup":"/wxcomponents/vant/popup/index","van-progress":"/wxcomponents/vant/progress/index","van-radio":"/wxcomponents/vant/radio/index","van-radio-group":"/wxcomponents/vant/radio-group/index","van-row":"/wxcomponents/vant/row/index","van-search":"/wxcomponents/vant/search/index","van-slider":"/wxcomponents/vant/slider/index","van-stepper":"/wxcomponents/vant/stepper/index","van-steps":"/wxcomponents/vant/steps/index","van-submit-bar":"/wxcomponents/vant/submit-bar/index","van-swipe-cell":"/wxcomponents/vant/swipe-cell/index","van-switch":"/wxcomponents/vant/switch/index","van-tab":"/wxcomponents/vant/tab/index","van-tabs":"/wxcomponents/vant/tabs/index","van-tabbar":"/wxcomponents/vant/tabbar/index","van-tabbar-item":"/wxcomponents/vant/tabbar-item/index","van-tag":"/wxcomponents/vant/tag/index","van-toast":"/wxcomponents/vant/toast/index","van-transition":"/wxcomponents/vant/transition/index","van-tree-select":"/wxcomponents/vant/tree-select/index","van-datetime-picker":"/wxcomponents/vant/datetime-picker/index","van-rate":"/wxcomponents/vant/rate/index","van-collapse":"/wxcomponents/vant/collapse/index","van-collapse-item":"/wxcomponents/vant/collapse-item/index","van-picker":"/wxcomponents/vant/picker/index"}

如此，即完成了Vant组件库的引入！