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编程 Javascript

微信小程序聊天功能的示例代码

Posted in Javascript onJanuary 13, 2020

效果

微信小程序聊天功能的示例代码

初始化滚动条高度

var keyHeight = 0;

数据格式

const CHAT_DATA=[
 {
  type:0,//0客服1用户
  content:'欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎欢迎',
  headImg:'../../assets/common/images/headHortrait.jpeg',//头像
  creatTime:'2019-01-01',//创建时间
  contentType:'text'
 }, {
  type: 0,//0客服1用户
  content: '1111111',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'text'
 }, {
  type: 1,//0客服1用户
  content: '222222',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'text'
 }, {
  type: 0,//0客服1用户
  content: '333333',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'text'
 }, {
  type: 1,//0客服1用户
  content: '4444444',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'text',
 }, {
  type: 0,//0客服1用户
  content: 'http://tmp/wxc79c66d8b0ed19a8.o6zAJs6QE8L8FKq645ts4e3LoKzI.pGakaVHKmbQ3160aa57e2bf33cb576fbabf691cd890b.durationTime=3706.aac',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'voice',
  duration: '3706',
 },{
  type: 1,//0客服1用户
  content: 'http://tmp/wxc79c66d8b0ed19a8.o6zAJs6QE8L8FKq645ts4e3LoKzI.pGakaVHKmbQ3160aa57e2bf33cb576fbabf691cd890b.durationTime=3706.aac',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'voice',
  duration:'3706'
 },
 {
  type: 1,//0客服1用户
  content: 'https://img.yzcdn.cn/vant/cat.jpeg',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'img'
 }, {
  type: 1,//0客服1用户
  content: 'https://img.yzcdn.cn/vant/cat.jpeg',
  headImg: '../../assets/common/images/headHortrait.jpeg',//头像
  creatTime: '2019-01-01',//创建时间
  contentType: 'img'
 }
];

wxml对话框

<block wx:key wx:for='{{chatData}}' wx:for-index="index">

   <!-- 单个消息1 客服发出（左） -->
   <view wx:if='{{item.type==0}}' id='msg-{{index}}' class="contentLeft" style=''>
    <view class="head">
      <image class="headImg" src='{{item.headImg}}' mode='widthFix'></image>
    </view>
    <view class='leftMsg' wx:if="{{item.contentType==='text'}}">{{item.content}}</view>
    <view class='leftMsg' wx:if="{{item.contentType==='voice'}}" data-duration="{{item.content}}">{{item.duration}}s</view>
     
    <view class='leftMsg img' wx:if="{{item.contentType==='img'}}"><image src="{{item.content}}" data-src="{{item.content}}" mode='widthFix' bindtap="onPreview"/></view>
   </view>

   <!-- 单个消息2 用户发出（右） -->
   <view wx:else id='msg-{{index}}' class="contentRight">
    <view class='rightMsg' wx:if="{{item.contentType==='voice'}}" data-duration="{{item.duration}}" bindtap="playRecord" style="width:{{30+item.duration*5}}px;justify-content: flex-end;display:flex;color:#000;">{{item.duration}}"<van-icon name="../../../assets/common/icon/voice-r.png" style="padding:0 0 0 5px;" /></view>
    <view class='rightMsg' wx:if="{{item.contentType==='text'}}">{{item.content}}</view>
    
    <view class='rightMsg img' wx:if="{{item.contentType==='img'}}"><image src="{{item.content}}" data-src="{{item.content}}" mode='widthFix' bindtap="onPreview"/></view>
     <view>
      <image class="headImg" src='{{item.headImg}}' mode='widthFix'></image>
    </view>
   </view>

  </block>

wxml底部输入框

<view class='inputRoom' style='bottom: {{inputBottom}};height: {{bottomHeight}}'>
  <van-row class="bottomRow">
   <van-col span="2"wx:if="{{show}}"> <van-icon bindtap="startRecord" class="iconfont icon" class-prefix='icon' size="40rpx" name="yuyin" ></van-icon></van-col>
    <van-col span="2" wx:if="{{!show}}"> <van-icon bindtap="startRecord" class="iconfont icon" class-prefix='icon' size="40rpx" name="fabiaowenzhang" ></van-icon></van-col>
   <van-col span="18" wx:if="{{show}}"> <input bindconfirm='sendClick'bind:input="inputValue" adjust-position='{{false}}' value='{{inputVal}}' confirm-type='send' bindfocus='focus' bindblur='blur'></input></van-col>
   <van-col span="18" wx:if="{{!show}}"> <view class="holdTape" bind:touchstart="startTalk" bind:touchend='stopRecord'>按住请说话</view></van-col>
   <van-col span="2"><van-icon class="iconfont icon" class-prefix='icon' size="40rpx" name='biaoqing' bindtap="getEmoji"></van-icon></van-col>
   <van-col span="2"><van-uploader use-slot accept='image' bind:after-read="uploadeImg"> <van-icon class="iconfont icon" class-prefix='icon' size="40rpx" name='icon02' ></van-icon></van-uploader></van-col>
  </van-row> 
   <view wx:if="{{showEmoji}}" class="emoji">
   <emoji bind:clickEmoji="clickEmoji" data-key="inputVal" value="{{inputVal}}" />
  </view>
 </view>
  
</view>
<view class="recordDailog" wx:if="{{showDailog}}"  >
<view class="show">
 <image src="../../assets/common/images/record.png"></image>
 <text>{{toastTitle}}</text>
</view>

css

#page{
 height: 90%;
overflow-y: auto;

}
.content{
 background: white;

}

.inputRoom {
 width: 100vw;
 /* height: 16vw; */
 border-top: 1px solid #cdcdcd;
 position: fixed;
 bottom: 0;
 display: flex;
 align-items: center;
 z-index: 20;
 background: white;
 flex-direction: column;

}
.bottomRow{
 width: 100%;
 height: 16vw;
display: flex;
align-items: center;
flex-direction: row
}
.bottomRow .van-row{
 width: 100%;

}
.emoji{
 height: 30vw;
}
input {
width: 90%;
height: 9.33vw;
background-color: #EEF4FA;
border-radius: 6rpx;
font-size: 28rpx;
color: #444;
padding: 0 3%;
margin-left: 2%;
}

.leftMsg {
 font-size: 26rpx;
 color: #333333;
line-height: 6vw;
padding: 2vw 2.5vw;
background-color: #EEF4FA;
 border-radius: 10rpx;
 z-index: 10;
}

.rightMsg {
 font-size: 26rpx;
 color: white;
 line-height: 6vw;
 padding: 2vw 2.5vw;
 background-color: #496DFF;
 border-radius: 10rpx;
 z-index: 10;
}



.chatFrame{
 background: white;
 height: 100%
} 
.icon{
 line-height: 8vw;

}
.head{
 display: flex;
 align-items: center
}
.headImg{
 border-radius: 50%; width: 60rpx;height: 60rpx;
}
.holdTape{
 width: 90%;
height: 9.33vw;
background-color: #EEF4FA;
border-radius: 6rpx;
padding: 0 3%;
margin-left: 2%;
display: flex;
align-items: center;
justify-content: center;

}

.recordDailog{
 -webkit-transition-duration: 300ms;
transition-duration: 300ms;
z-index: 1000;
position: fixed;
top: 50%;
left: 50%;
width: -webkit-fit-content;
width: fit-content;
-webkit-transform: translate(-50%,-50%);
transform: translate(-50%,-50%);
max-width: var(--toast-max-width,70%);

}

.show{
width: var(--toast-default-width,90px);
min-height: var(--toast-default-min-height,90px);
padding: var(--toast-default-padding,16px);
display: flex;
-webkit-flex-direction: column;
flex-direction: column;
-webkit-align-items: center;
align-items: center;
-webkit-justify-content: center;
justify-content: center;
box-sizing: initial;
color: var(--toast-text-color,#fff);
font-size: var(--toast-font-size,14px);
line-height: var(--toast-line-height,20px);
white-space: pre-wrap;
word-wrap: break-word;
background-color: var(--toast-background-color,rgba(50,50,51,.88));
border-radius: var(--toast-border-radius,4px);

}
.show image{
 width: 24px;
 height: 24px
}
image{
 /* max-width: 88vw;
max-height: 400rpx; */
width: 100%
}
.img{
background: none;
width: 90%
}
.contentRight{
 display: flex; justify-content: flex-end; padding: 2vw 2vw 2vw 11vw;width: 86%;
}
.contentLeft{
 display: flex; padding: 2vw 11vw 2vw 2vw;width: 86%;
}

js

// pages/contact/contact.js
const {
 pageFunc
} = require('../../utils/util.js');
const app = getApp();
var windowWidth = wx.getSystemInfoSync().windowWidth;
var windowHeight = wx.getSystemInfoSync().windowHeight;
var keyHeight = 0;
const { CHAT_DATA}=require("../../data/customerService.js");
import Toast from '../../components/vant/toast/toast';
const recorderManager = wx.getRecorderManager();
const innerAudioContext = wx.createInnerAudioContext();
const db = wx.cloud.database();
/**
 * 初始化数据
 */
/**
 * 计算msg总高度
 */
function calScrollHeight(that, keyHeight) {
 var query = wx.createSelectorQuery();
 query.select('.scrollMsg').boundingClientRect(function(rect) {
 }).exec();
}
Page({

 /**
  * 页面的初始数据
  */
 data: {
  scrollHeight: '100vh',
  inputVal:"",
  inputBottom: 0,
  chatData:[],
  show:true,
  showDailog:false,
  bottomHeight:"18vw",
  sendData:{},
  pagination: {
   pageSize: 5,
   currentPage: 1,
   total: 0,
  },
  showEmoji:false,
  toastTitle:"录音中...."
 },

 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
  // this.setData({
  //  cusHeadIcon: app.globalData.userInfo.avatarUrl,
  // });
  const {
   pagination
  } = this.data
  this.getData({ param: CHAT_DATA, pagination });
   wx.pageScrollTo({
    scrollTop: 1000
   })
 },
 getData(params) {
  const { chatData } = this.data;
  const {
   param,
   pagination: {
    pageSize = 10,
    currentPage = 1
   },
  } = params;
  this.setData({
   pagination: { pageSize, currentPage }
  });
  const {
   data,
   pagination
  } = pageFunc(param, currentPage, pageSize);
  data.forEach((item) => {
   if (item.duration) {
    item.duration = Math.ceil(item.duration / 1000)
   }
  });
   this.setData({
    'chatData': data.concat(chatData)
   });
 },
 startRecord(){//开始录音
 const {show}=this.data
  if (show){
   this.setData({
    show: false,
   })
  }else{
   this.setData({
    show: true,
   })
  }
  
  
 },
 startTalk(e){//开始说话
  this.setData({
   showDailog:true,
  })
  const options = {
   duration: 60000,
   sampleRate: 44100,
   numberOfChannels: 1,
   encodeBitRate: 192000,
   format: 'aac',
   frameSize: 50
  }
  recorderManager.start(options)
  recorderManager.onStart((res) => {
  })
 },
 stopRecord(){//停止说话
  const that=this
  this.setData({
   showDailog:false,
  })
  recorderManager.stop();
  recorderManager.onStop((res) => {
   const { sendData, chatData } = that.data;
   let { tempFilePath, duration, fileSize} = res
   sendData.tempFilePathData=res
   duration = Math.ceil(duration / 1000)
   const data = { content: tempFilePath, duration , fileSize, contentType: 'voice', type: 1};
   chatData.push(data);
   wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
    // 使页面滚动到底部
    wx.pageScrollTo({
     scrollTop: rect.bottom + 5000
    })
   }).exec();
   that.setData({
    'tempFilePath': tempFilePath,
    sendData,
    chatData,
    scrollHeight: (windowHeight - 0) + 'px',
    toView: 'msg-' + (chatData.length - 1),
    inputBottom: '0px'
   })
  })
 },

 playRecord(e){//播放语音
  const { currentTarget: { dataset: { duration } }}=e;
  const { tempFilePath} = this.data
  innerAudioContext.autoplay = true;
  innerAudioContext.src = tempFilePath ,
   innerAudioContext.onPlay(() => {
    this.setData({
     toastTitle: "播放中....",
     showDailog: true,
    })
   })
  innerAudioContext.onEnded((res) => {
   this.setData({
    toastTitle: "录音中....",
    showDailog: false,
   })
  })
  innerAudioContext.onError((res) => {
  });
  innerAudioContext.play()
 },

 uploadeImg(e){
  const { file: { path,size:fileSize} } = e.detail;
  const { chatData } = this.data;
  const data = { content: path, fileSize, contentType: 'img', type: 1 };
  chatData.push(data);
  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
   // 使页面滚动到底部
   wx.pageScrollTo({
    scrollTop: rect.bottom + 5000
   })
  }).exec()
  this.setData({
   chatData,
   scrollHeight: (windowHeight - 0) + 'px',
   toView: 'msg-' + (chatData.length - 1),
   inputBottom:'0px'
  })
 },
 getEmoji(){//获取表情包
  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
   // 使页面滚动到底部
   wx.pageScrollTo({
    scrollTop: rect.bottom + 5000
   })
  }).exec()
 this.setData({
  showEmoji:true,
  bottomHeight:"48vw"
 })
 },

 clickEmoji: function (e) {//选择表情包
  const {
   detail: {
    value
   },
   currentTarget: {
    dataset: {
     key
    }
   }
  } = e;
  this.setData({
   [key]: value
  })
 },

 onPreview(e){
  const {
   currentTarget: {
    dataset: {
     src
    }
   }
  } = e;
  const urls = [src]
  wx.previewImage({
   current: src,
   urls
  })
 },
 /**
  * 生命周期函数--监听页面显示
  */
 onShow: function () {

 },

 /**
  * 页面相关事件处理函数--监听用户下拉动作
  */
 onPullDownRefresh: function () {
  let { pagination: { currentPage } } = this.data
  this.getData({
   param: CHAT_DATA,
   pagination: {
    pageSize: 5,
    currentPage: currentPage + 1,
   }
  });
 },

 /**
  * 页面上拉触底事件的处理函数
  */
 onReachBottom: function () {

 },

 /**
  * 获取聚焦
  */
 inputValue(e){
  const {detail:{value}}=e
  this.setData({
   inputVal:value
  })
 },
 focus: function (e) {
  const { chatData}=this.data
  keyHeight = e.detail.height;
  wx.pageScrollTo({
   scrollTop: windowHeight - keyHeight
  })
  this.setData({
   toView: 'msg-' + (chatData.length - 1),
   inputBottom: keyHeight + 'px',
   scrollHeight: (windowHeight - keyHeight) + 'px',
   showEmoji:false,
   bottomHeight: "18vw"
  })
  //计算msg高度
  // calScrollHeight(this, keyHeight);

 },

 //失去聚焦(软键盘消失)
 blur: function (e) {
  const { chatData } = this.data
  this.setData({
   scrollHeight: '100vh',
   inputBottom: 0
  })
  this.setData({
   toView: 'msg-' + (chatData.length - 1)
  })

 },

 /**
  * 发送点击监听
  */
 sendClick: function (e) {
  const { chatData, scrollHeight}=this.data;
  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
   // 使页面滚动到底部
   wx.pageScrollTo({
    scrollTop: rect.bottom + 5000
   })
  }).exec()
 
  chatData.push({
   type: 1,
   contentType: 'text',
   content: e.detail.value,
   headImg: '../../assets/common/images/headHortrait.jpeg',
  })
  this.setData({
   chatData,
   inputVal:''
  });


 },

 /**
  * 退回上一页
  */
 toBackClick: function () {
  wx.navigateBack({})
 }

})// pages/contact/contact.js
const {
 pageFunc
} = require('../../utils/util.js');
const app = getApp();
var windowWidth = wx.getSystemInfoSync().windowWidth;
var windowHeight = wx.getSystemInfoSync().windowHeight;
var keyHeight = 0;
const { CHAT_DATA}=require("../../data/customerService.js");
import Toast from '../../components/vant/toast/toast';
const recorderManager = wx.getRecorderManager();
const innerAudioContext = wx.createInnerAudioContext();
const db = wx.cloud.database();
/**
 * 初始化数据
 */
/**
 * 计算msg总高度
 */
function calScrollHeight(that, keyHeight) {
 var query = wx.createSelectorQuery();
 query.select('.scrollMsg').boundingClientRect(function(rect) {
 }).exec();
}
Page({

 /**
  * 页面的初始数据
  */
 data: {
  scrollHeight: '100vh',
  inputVal:"",
  inputBottom: 0,
  chatData:[],
  show:true,
  showDailog:false,
  bottomHeight:"18vw",
  sendData:{},
  pagination: {
   pageSize: 5,
   currentPage: 1,
   total: 0,
  },
  showEmoji:false,
  toastTitle:"录音中...."
 },

 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
  // this.setData({
  //  cusHeadIcon: app.globalData.userInfo.avatarUrl,
  // });
  const {
   pagination
  } = this.data
  this.getData({ param: CHAT_DATA, pagination });
   wx.pageScrollTo({
    scrollTop: 1000
   })
 },
 getData(params) {
  const { chatData } = this.data;
  const {
   param,
   pagination: {
    pageSize = 10,
    currentPage = 1
   },
  } = params;
  this.setData({
   pagination: { pageSize, currentPage }
  });
  const {
   data,
   pagination
  } = pageFunc(param, currentPage, pageSize);
  data.forEach((item) => {
   if (item.duration) {
    item.duration = Math.ceil(item.duration / 1000)
   }
  });
   this.setData({
    'chatData': data.concat(chatData)
   });
 },
 startRecord(){//开始录音
 const {show}=this.data
  if (show){
   this.setData({
    show: false,
   })
  }else{
   this.setData({
    show: true,
   })
  }
  
  
 },
 startTalk(e){//开始说话
  this.setData({
   showDailog:true,
  })
  const options = {
   duration: 60000,
   sampleRate: 44100,
   numberOfChannels: 1,
   encodeBitRate: 192000,
   format: 'aac',
   frameSize: 50
  }
  recorderManager.start(options)
  recorderManager.onStart((res) => {
  })
 },
 stopRecord(){//停止说话
  const that=this
  this.setData({
   showDailog:false,
  })
  recorderManager.stop();
  recorderManager.onStop((res) => {
   const { sendData, chatData } = that.data;
   let { tempFilePath, duration, fileSize} = res
   sendData.tempFilePathData=res
   duration = Math.ceil(duration / 1000)
   const data = { content: tempFilePath, duration , fileSize, contentType: 'voice', type: 1};
   chatData.push(data);
   wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
    // 使页面滚动到底部
    wx.pageScrollTo({
     scrollTop: rect.bottom + 5000
    })
   }).exec();
   that.setData({
    'tempFilePath': tempFilePath,
    sendData,
    chatData,
    scrollHeight: (windowHeight - 0) + 'px',
    toView: 'msg-' + (chatData.length - 1),
    inputBottom: '0px'
   })
  })
 },

 playRecord(e){//播放语音
  const { currentTarget: { dataset: { duration } }}=e;
  const { tempFilePath} = this.data
  innerAudioContext.autoplay = true;
  innerAudioContext.src = tempFilePath ,
   innerAudioContext.onPlay(() => {
    this.setData({
     toastTitle: "播放中....",
     showDailog: true,
    })
   })
  innerAudioContext.onEnded((res) => {
   this.setData({
    toastTitle: "录音中....",
    showDailog: false,
   })
  })
  innerAudioContext.onError((res) => {
  });
  innerAudioContext.play()
 },

 uploadeImg(e){
  const { file: { path,size:fileSize} } = e.detail;
  const { chatData } = this.data;
  const data = { content: path, fileSize, contentType: 'img', type: 1 };
  chatData.push(data);
  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
   // 使页面滚动到底部
   wx.pageScrollTo({
    scrollTop: rect.bottom + 5000
   })
  }).exec()
  this.setData({
   chatData,
   scrollHeight: (windowHeight - 0) + 'px',
   toView: 'msg-' + (chatData.length - 1),
   inputBottom:'0px'
  })
 },
 getEmoji(){//获取表情包
  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
   // 使页面滚动到底部
   wx.pageScrollTo({
    scrollTop: rect.bottom + 5000
   })
  }).exec()
 this.setData({
  showEmoji:true,
  bottomHeight:"48vw"
 })
 },

 clickEmoji: function (e) {//选择表情包
  const {
   detail: {
    value
   },
   currentTarget: {
    dataset: {
     key
    }
   }
  } = e;
  this.setData({
   [key]: value
  })
 },

 onPreview(e){
  const {
   currentTarget: {
    dataset: {
     src
    }
   }
  } = e;
  const urls = [src]
  wx.previewImage({
   current: src,
   urls
  })
 },
 /**
  * 生命周期函数--监听页面显示
  */
 onShow: function () {

 },

 /**
  * 页面相关事件处理函数--监听用户下拉动作
  */
 onPullDownRefresh: function () {
  let { pagination: { currentPage } } = this.data
  this.getData({
   param: CHAT_DATA,
   pagination: {
    pageSize: 5,
    currentPage: currentPage + 1,
   }
  });
 },

 /**
  * 页面上拉触底事件的处理函数
  */
 onReachBottom: function () {

 },

 /**
  * 获取聚焦
  */
 inputValue(e){
  const {detail:{value}}=e
  this.setData({
   inputVal:value
  })
 },
 focus: function (e) {
  const { chatData}=this.data
  keyHeight = e.detail.height;
  wx.pageScrollTo({
   scrollTop: windowHeight - keyHeight
  })
  this.setData({
   toView: 'msg-' + (chatData.length - 1),
   inputBottom: keyHeight + 'px',
   scrollHeight: (windowHeight - keyHeight) + 'px',
   showEmoji:false,
   bottomHeight: "18vw"
  })
  //计算msg高度
  // calScrollHeight(this, keyHeight);

 },

 //失去聚焦(软键盘消失)
 blur: function (e) {
  const { chatData } = this.data
  this.setData({
   scrollHeight: '100vh',
   inputBottom: 0
  })
  this.setData({
   toView: 'msg-' + (chatData.length - 1)
  })

 },

 /**
  * 发送点击监听
  */
 sendClick: function (e) {
  const { chatData, scrollHeight}=this.data;
  wx.createSelectorQuery().select('.content').boundingClientRect(function (rect) {
   // 使页面滚动到底部
   wx.pageScrollTo({
    scrollTop: rect.bottom + 5000
   })
  }).exec()
 
  chatData.push({
   type: 1,
   contentType: 'text',
   content: e.detail.value,
   headImg: '../../assets/common/images/headHortrait.jpeg',
  })
  this.setData({
   chatData,
   inputVal:''
  });


 },

 /**
  * 退回上一页
  */
 toBackClick: function () {
  wx.navigateBack({})
 }

})

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三水点靠木。

微信小程序聊天功能的示例代码

- Author -

lulu

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

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