vue3.0 搭建项目总结(详细步骤)

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内容图文

1.环境配置

项目中的不同开发环境有很多依赖配置，所以可以根据环境设置不同的配置，以免在不同环境经常修改文件

1 在根目录下创建 `.env.[环境]` 文件，可以在不同环境设置一些配置变量，如图

 

.env.dev 文件

2.eslint 配置

在package.json 文件里面有一个eslintConfig对象，可设置rules： 如图

3.配置svg

在vue.config.js 里面需在module.exports对象里面设置

chainWebpack: config => {
  config.module.rules.delete('svg') // 重点:删除默认配置中处理svg,//const svgRule = config.module.rule('svg') //svgRule.uses.clear()
  config.module
   .rule('svg-sprite-loader')
   .test(/\.svg$/)
   .use('svg-sprite-loader')
   .loader('svg-sprite-loader')
   .options({
    symbolId: 'icon-[name]'
   })
 }

svg component

<template>
 <svg :class="svgClass" aria-hidden="true">
  <use :xlink:href="iconName" rel="external nofollow" />
 </svg>
</template>

<script>
export default {
 name: 'SvgIcon',
 props: {
  iconClass: {
   type: String,
   required: true
  },
  className: {
   type: String,
   default: ''
  }
 },
 computed: {
  iconName() {
   return `#icon-${this.iconClass}`
  },
  svgClass() {
   if (this.className) {
    return 'svg-icon ' + this.className
   } else {
    return 'svg-icon'
   }
  }
 }
}
</script>

<style scoped>
.svg-icon {
 width: 1em;
 height: 1em;
 vertical-align: -0.15em;
 fill: currentColor;
 overflow: hidden;
}
</style>

```

使用svg组件

import SvgIcon from '@/components/SvgIcon.vue'
// 设置全局组件svgIcon
Vue.component('svg-icon', SvgIcon)
const req = require.context('./assets/svg', true, /\.svg$/) // 查询文件加下面的svg文件
const requireAll = requireContext => requireContext.keys().map(requireContext)
requireAll(req) // 全局导入svg文件

2.通用组件

级联（多选且可以选择全部）组件

安装插件 multi-cascader-base-ele

使用

import multiCascader from 'multi-cascader-base-ele'
Vue.use(multiCascader)

-- 支持选择全部

<template>
 <div>
  <MultiTestCascader v-model="selectedOptions" class="multi-cascader" :props="customProps" :options="options" multiple filterable select-children :show-all-levels="false" clearable only-out-put-leaf-node @change="cascaderChange" />
 </div>
</template>
<script>
export default {
 props: {
 // 传入级联列表数据
  options: {
   type: Array,
   default: () => []
  },
  // 传入选择数据
  list: {
   type: Array,
   default: () => []
  },
  // 自定义相关字段
  customProps: {
   type: Object,
   default: () => {
    return {
     label: 'label',
     value: 'value',
     children: 'children'
    }
   }
  },
  // 显示全部类型 1 全部二级/全部三级 2 全部二级分类/全部三级分类 3 全省/全市
  type: {
   type: String,
   default: () => '1'
  }
 },
 data() {
  return {
   selectedOptions: this.list,
   listStatus: true
  }
 },
 created() {

 },
 watch: {
  options(newValue, oldValue) {
   this.setListDisabled(newValue)
   this.addAllLabel(newValue)
  },
  list(newValue) {
   if (this.listStatus) {
    this.cascaderChange(newValue)
    this.listStatus = false
   }
  }
 },
 mounted() {
  this.setListDisabled(this.options)
  this.addAllLabel(this.options)
 },
 methods: {
  addAllLabel(list) {
   list.forEach(val => {
    if (val[this.customProps.children] && val[this.customProps.children].length > 0 && val[this.customProps.children][0][this.customProps.label] !== (this.type === '1' ? '全部一级' : (this.type === '2' ? '全部一级分类' : (this.type === '3' ? '全省' : '')))) {
     if (val[this.customProps.children].length > 1) {
      val[this.customProps.children].unshift({
       [this.customProps.label]: this.type === '1' ? '全部二级' : (this.type === '2' ? '全部二级分类' : (this.type === '3' ? '全省' : '')),
       [this.customProps.value]: val[this.customProps.value],
       [this.customProps.children]: null
      })
     }
     val[this.customProps.children].forEach(v => {
      if (v[this.customProps.children] && v[this.customProps.children].length > 1 && v[this.customProps.children][0][this.customProps.label] !== (this.type === '1' ? '全部二级' : (this.type === '2' ? '全部二级分类' : (this.type === '3' ? '全省' : '')))) {
       if (v[this.customProps.children].length > 1) {
        v[this.customProps.children].unshift({
         [this.customProps.label]: this.type === '1' ? '全部三级' : (this.type === '2' ? '全部三级分类' : (this.type === '3' ? '全市' : '')),
         [this.customProps.value]: v[this.customProps.value],
         [this.customProps.children]: null
        })
       }
      }
     })
    }
   })
  },
  setListDisabled(list) {
   const label = this.customProps.label
   const value = this.customProps.value
   const children = this.customProps.children
   list.forEach(val => {
    val.disabled = false
    if (val[children]) this.setListDisabled(val[children])
   })
  },
  cascaderChange(itemList) {
   if (!itemList || itemList.length === 0) {
    this.selectedOptions = []
   }
   this.setListDisabled(this.options)
   const label = this.customProps.label
   const value = this.customProps.value
   const children = this.customProps.children
   this.options.forEach((v, l) => {
    this.selectedOptions.forEach(val => {
     if (val[0] === '-1') {
      if (v[value] !== '-1') v.disabled = true
      else v.disabled = false
      if (v[children] && v[children].length > 0) {
       v[children].forEach(c => { c.disabled = true })
      }
     } else {
      if (v[value] === '-1') v.disabled = true
      else v.disabled = false
      if (v[children] && v[children].length > 0) {
       v[children].forEach(c => { c.disabled = false })
      }
     }
     if (val.length === 2 && v[value] === val[0] && v[children]) {
      v[children].forEach((item, num) => {
       item.disabled = false
       if (val[0] === val[1] && item[value] === val[1]) {
        item.disabled = false
       } else {
        if (val[0] === val[1] && num !== 0) {
         item.disabled = true
         if (item[children]) {
          item[children].forEach(i => {
           i.disabled = true
          })
         }
        }
        if (val[0] !== val[1] && num === 0 && v[children].length > 1) item.disabled = true
       }
       // this.options[l][children][0].disabled = true
      })
     }
     if (val.length === 3 && v[value] === val[0] && v[children]) {
      v[children].forEach((item, j) => {
       // let status = false
       if (item[children] && val[1] === item[value]) {
        item.disabled = false
        item[children].forEach((i, index) => {
         i.disabled = false
         if (i[value] === val[2]) status = true
         if (i[value] === val[2] && val[1] === val[2]) {
          i.disabled = false
         } else {
          if (val[1] !== val[2] && index === 0 && v[children].length > 1) i.disabled = true
          if (val[1] === val[2] && index !== 0) i.disabled = true
         }
        })
        // this.options[0].disabled = true
        this.options[l][children][0].disabled = true
        // return status
       }
      })
     }
    })
   })
   this.selectedOptions = this.selectedOptions.map(val => {
    if (val.length === 2 && val[0] === val[1]) return [val[0]]
    if (val.length === 1 && val[0] === '-1') return [val[0]]
    if (val.length === 3 && val[1] === val[2]) return [val[0], val[1]]
    return val
   })
   const item = this.selectedOptions[this.selectedOptions.length - 1]
   const length = this.selectedOptions.length
   let status = -1
   this.selectedOptions.some((val, index) => {
    if ((length - 1) === index) return true
    if (item.length === val.length) {
     if (item.join(',') === val.join(',')) {
      status = 1
      return true
     }
    }
    if (item.length > val.length) {
     if (item.join(',').includes(val.join(','))) {
      status = 2
      return true
     }
    }
    if (val.length > item.length) {
     if (val.join(',').includes(item.join(','))) {
      status = 3
      return true
     }
    }
   })
   if (status !== -1) {
    this.selectedOptions.splice(this.selectedOptions.length - 1, 1)
   }
   this.$emit('update:list', this.selectedOptions)
  }
 }
}
</script>

上传（支持图片/视频/裁剪图片/拖拽）

安装插件

vuedraggable axios vue-cropper

代码

<!-- -->
<template>
 <div class="image-draggable">
  <draggable v-model="draggableList" @end="onEnd">
   <!-- <transition-group> -->
   <div v-for="(item, index) in draggableList" :key="index" class="image-list">
    <template v-if="item.isImg">
     <img :src="item.displayUrl" alt="" srcset="" style="width: 148px; height: 148px;">
     <div class="icon">
      <span @click="viewImage(item.displayUrl)">
       <svg-icon icon-class="view" class="icon-size" style="margin-right: 10px;"></svg-icon>
      </span>
      <span @click="remove(index)">
       <svg-icon icon-class="delete" class="icon-size"></svg-icon>
      </span>
     </div>
    </template>
    <template v-if="!item.isImg">
     <video :src="item.displayUrl" :ref="item.id" :id="item.id" :poster="item.coverUrl" style="width: 148px; height: 148px;">
     </video>
     <div class="icon">
      <span v-if="item.isPlay" @click="play(item)" class="video-icon">
       <svg-icon icon-class="play" class="icon-size"></svg-icon>
      </span>
      <span v-if="!item.isPlay" @click="pause(item)" class="video-icon">
       <svg-icon icon-class="pause" class="icon-size"></svg-icon>
      </span>
      <span @click="fullPlay(item)" class="video-icon">
       <svg-icon icon-class="full" class="icon-size"></svg-icon>
      </span>
      <span @click="remove(index)">
       <svg-icon icon-class="delete" class="icon-size"></svg-icon>
      </span>
     </div>
    </template>
   </div>

   <!-- </transition-group> -->
  </draggable>
  <el-upload :id="uploadId" :disabled="isDiabled" :action="uploadUrl" class="image-upload" :headers="headers" :accept="accept" list-type="picture-card" :show-file-list="false" :on-preview="handlePictureCardPreview" :on-progress="handleProgress" :on-change="fileChange" :auto-upload="!isCropper" :on-remove="handleRemove" :on-success="imageSuccess" :before-upload="fileBeforeUpload">
   <i class="el-icon-plus"></i>
   <el-progress :percentage="percentage" v-if="isUpload && isLoading" :show-text="false"></el-progress>
  </el-upload>
  <el-dialog :visible.sync="dialogVisible">
   <img width="100%" :src="dialogImageUrl" alt="">
  </el-dialog>
  <el-dialog :visible.sync="modifyCropper">
   <div :style="{height: (autoCropHeight + 100) + 'px'}">
    <vueCropper ref="cropper" :img="imgSrc" :outputSize="option.size" :outputType="option.outputType" :info="true" :full="option.full" :canMove="option.canMove" :canMoveBox="option.canMoveBox" :original="option.original" :autoCrop="option.autoCrop" :autoCropHeight="autoCropHeight" :autoCropWidth="autoCropWidth" :fixedBox="option.fixedBox" @realTime="realTime" @imgLoad="imgLoad"></vueCropper>
   </div>
   <span slot="footer" class="dialog-footer">
    <el-button @click="modifyCropper = false">取 消</el-button>
    <el-button type="primary" @click="uploadCropperImage">确 定</el-button>
   </span>
  </el-dialog>
 </div>
</template>

<script>
// 拖拽
import draggable from 'vuedraggable'
// 裁剪
import { VueCropper } from 'vue-cropper'
// 上传地址
import { upload } from '@/api'
import { getToken } from '@/util/auth'
import axios from 'axios'

export default {
 name: '',
 data() {
  return {
   headers: {
    Authorization: getToken()
   },
   uploadUrl: upload,
   displayUrl: '',
   dialogImageUrl: '',
   dialogVisible: false,
   percentage: 0,
   accept: '',
   draggableList: [],
   isUpload: false,
   modifyCropper: false,
   isDiabled: false,
   cropperImage: {
   },
   uploadId: 'id' + Date.now(),
   imgSrc: '',
   option: {
    size: 0.5,
    full: true, // 

输出原图比例截图 props名full outputType: 'png', canMove: true, original: true, canMoveBox: false, autoCrop: true, fixedBox: true } } }, props: { // 已存在的文件 fileList: { type: Array, default() { return [ ] } }, // 返回类型 Array 数组 Object 对象 returnType: { type: String, default: 'Array' }, // 自定义对象 customObject: { type: Object, default: () => { } }, // 上传的最大个数 maxNum: { type: Number, required: true, default: 1 }, // 单位MB maxSize: { type: Number, default: 15 }, autoCropWidth: { type: Number, default: 180 }, autoCropHeight: { type: Number, default: 180 }, // 上传类型 All 图片/视频 image 图片 video视频 acceptType: { type: String, default: 'All' }, // 是否裁剪 isCropper: { type: Boolean, default: false }, // 是否显示加载条 isLoading: { type: Boolean, default: true }, outputSize: { type: Number, default: 1 }, outputType: { type: String, default: 'jpeg' } }, components: { draggable, VueCropper }, watch: { draggableList(newValue, oldValue) { this.getElement(this.draggableList.length) }, fileList(newValue, oldValue) { this.draggableList = newValue this.initImage() } }, computed: {}, mounted() { if (this.acceptType === 'All') { this.accept = 'image/png, image/jpeg, image/gif, image/jpg, .mp4,.qlv,.qsv,.ogg,.flv,.avi,.wmv,.rmvb' } if (this.acceptType === 'image') { this.accept = 'image/png, image/jpeg, image/gif, image/jpg' } if (this.acceptType === 'video') { this.accept = '.mp4,.qlv,.qsv,.ogg,.flv,.avi,.wmv,.rmvb' } this.initImage() }, methods: { // 获取五位数的随机数 getRandom() { return (((Math.random() + Math.random()) * 10000) + '').substr(0, 5).replace('.', 0) }, initImage() { const _this = this // console.log('file', this.fileList) if (this.fileList.length > 0) { this.draggableList = this.fileList.map(val => { let displayUrl = '' let coverUrl = '' let isImg = true const files = (val.url ? val.url : val).split(',') if (files.length === 3) { displayUrl = files[1] coverUrl = files[2] isImg = false } else if (files.length === 1) { displayUrl = (val.url ? val.url : val) isImg = true } const fileObj = Object.assign({}, { coverUrl: coverUrl, displayUrl: displayUrl, isImg: isImg, isPlay: true, name: Date.now(), url: (val.url ? val.url : val), id: val.id || Date.now() + _this.getRandom() }) return fileObj }).filter(val => { return val.url }) } }, handleRemove(file, fileList) { this.getElement(fileList.length) }, handlePictureCardPreview(file) { this.dialogImageUrl = file.url this.dialogVisible = true }, handleProgress(event, file, fileList) { this.percentage = +file.percentage }, fileBeforeUpload(file, event) { if (this.acceptType === 'image' && !file.type.includes('image/')) { this.$warning('请上传图片') return false } if (this.acceptType === 'video' && !file.type.includes('video/')) { this.$warning('请上传视频') return false } this.isUpload = true if (file.type.includes('image/') && (file.size > this.maxSize * 1024 * 1024)) { this.$warning(`请上传小于${this.maxSize}M的图片`) this.percentage = 0 this.isLoading = false return false } if (file.type.includes('video/')) this.isDiabled = true if (this.isCropper) { return false } }, fileChange(file, fileList) { if (file.percentage === 0 && this.isCropper) { if (file.raw.type.includes('video/')) { this.$warning('请上传图片') return } this.imgSrc = file.url this.modifyCropper = true this.cropperImage = { coverUrl: '', isImg: true, isPlay: true, name: file.name } } }, // 实时预览函数 realTime(data) { this.previews = data }, imgLoad(data) { }, // 裁剪后上传图片 uploadCropperImage() { const _this = this this.$refs.cropper.getCropBlob((data) => { const config = { headers: { 'Authorization': _this.headers.Authorization, 'Content-Type': 'multipart/form-data' } } const formdata = new FormData() formdata.append('file', data) // this.uploadUrl 上传 axios.post(this.uploadUrl, formdata, config).then(response => { _this.cropperImage = Object.assign({}, _this.cropperImage, { displayUrl: response.data.data, url: response.data.data, id: Date.now() }) _this.draggableList.push(_this.cropperImage) _this.$emit('getImageList', _this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: true } } }), _this.customObject) _this.modifyCropper = false }).catch(error => { console.log('err', error) }) }) }, imageSuccess(response, file, fileList) { const _this = this try { this.getElement(fileList.length) let displayUrl = '' let coverUrl = '' let isImg = true const url = file.response.data || file.url this.isUpload = false const files = url.split(',') if (files.length === 3) { displayUrl = files[1] coverUrl = files[2] isImg = false } else if (files.length === 1) { displayUrl = url isImg = true } const id = Date.now() _this.draggableList.push({ name: file.name, url: url, coverUrl: coverUrl, displayUrl: displayUrl, isImg: isImg, isPlay: true, id: id }) if (isImg) { _this.percentage = 0 _this.$emit('getImageList', _this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: true } } }), _this.customObject) return } _this.$emit('getImageList', _this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: false } } }), _this.customObject) setTimeout(() => { const keys = Object.keys(_this.$refs) const video = _this.$refs[`${keys[keys.length - 1]}`][0] const removeId = keys[keys.length - 1] const interval = setInterval(() => { if (video.readyState === 4) { const duration = video.duration this.isDiabled = false if (duration < 3 || duration > 60) { _this.$message.success('请上传大于三秒小于六十秒的视频') _this.percentage = 0 // _this.remove(_this.draggableList.length - 1) _this.draggableList = _this.draggableList.filter(val => { return (val.id + '') !== (removeId + '') }) _this.$emit('getImageList', _this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: true } } }), _this.customObject) _this.getElement(_this.draggableList.length) } _this.percentage = 0 _this.$emit('getImageList', _this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: true } } }), _this.customObject) clearInterval(interval) } video.src = displayUrl video.poster = coverUrl }, 1000) }, 1000) } catch (error) { console.log('error', error) } }, play(item) { const video = document.getElementById(item.id) video.play() item.isPlay = !item.isPlay }, pause(item) { const video = document.getElementById(item.id) video.pause() item.isPlay = !item.isPlay }, // 全屏播放 fullPlay(item) { const video = document.getElementById(item.id) // w3c typeof video.requestFullScreen === 'function' && video.requestFullScreen() // webkit（谷歌） typeof video.webkitRequestFullScreen === 'function' && video.webkitRequestFullScreen() // 火狐 typeof video.mozRequestFullScreen === 'function' && video.mozRequestFullScreen() // IE typeof video.msExitFullscreen === 'function' && video.msExitFullscreen() }, viewImage(url) { this.dialogImageUrl = url this.dialogVisible = true }, remove(index) { this.draggableList.splice(index, 1) this.$emit('getImageList', this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: true } } }), this.customObject) this.getElement(this.draggableList.length) }, onEnd(event) { this.$emit('getImageList', this.draggableList.map(val => { if (this.returnType === 'Array') { return val.url } if (this.returnType === 'Object') { return { url: val.url, uploadStatus: true } } }), this.customObject) }, isImg(obj) { const item = obj.url if (item === '' || item === null || typeof item === 'undefined') { return false } const index = item.lastIndexOf('.') var ext = item.substr(index + 1) if (ext.includes('!')) ext = ext.split('!')[0] ext = ext.toLowerCase() var tps = ['jpg', 'jpeg', 'png'] let ok = false for (let i = 0; i < tps.length; i++) { if (tps[i] === ext) { ok = true break } } return ok }, getElement(length) { const _this = this if (length >= _this.maxNum) { document.querySelectorAll(`#${_this.uploadId} .el-upload--picture-card`).forEach(val => { if (val.firstElementChild.className === 'el-icon-plus') { val.style.display = 'none' return true } }) } else { document.querySelectorAll(`#${_this.uploadId} .el-upload--picture-card`).forEach(val => { if (val.firstElementChild.className === 'el-icon-plus') { val.style.display = 'inline-block' return true } }) } } } } </script> <style lang='scss' scoped> .image-draggable { display: flex; flex-wrap: wrap; .image-list { position: relative; display: inline-block; overflow: hidden; width: 148px; height: 148px; margin-right: 10px; cursor: pointer; &:hover { .icon { height: 20%; transition: all .5s; .video-icon { display: inline-block; margin-right: 10px; } } } .icon { position: absolute; bottom: 0; display: flex; justify-content: center; width: 100%; height: 0; background-color: rgba(215, 215, 215, 1); .icon-size { width: 2em; height: 2em; } .video-icon { display: none; } } } } </style> <style lang="scss"> .image-draggable { .el-progress { top: -50%; } } </style>

注册全局事件

创建eventBus.js

使用

import eventBus from './plugins/eventBus'
Vue.use(eventBus)

处理缓存

借用mounted， activated 事件处理数据

在某一次打开页面的时候进行数据初始化存储， 放置在vuex中，或者全局变量中，当需要初始化进行一个初始化，采取mixins引入

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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