wxml

<view class='ceng' hidden='{{!showceng}}' catchtouchmove='true'></view>
<!-- editTxt-titt -->
<view class='edit-txt' hidden='{{!showedittitt}}' catchtouchmove='true'>
  <textarea placeholder='请编辑文字' value='{{edittitt}}' bindconfirm="editedtitt"	 maxlength="300" />
</view>
<!-- editTxt-content -->
<view class='edit-txt' hidden='{{!showeditcontent}}' catchtouchmove='true'>
  <textarea placeholder='请编辑文字' value='{{editcontent}}' bindconfirm="editedcontent"	 maxlength="300" />
</view>
<!-- reditTxt-content 标题输入，首编辑输入，重新编辑输入是分别使用三个不同的编辑框实现-->
<view class='edit-txt' hidden='{{!showreditcontent}}' catchtouchmove='true'>
  <textarea placeholder='请编辑文字' value='{{reditcontent}}' bindconfirm="reditedcontent"	 maxlength="300" />
</view>
<view class='k-bai'>
  <view class='txt titt' data-name='titt' bindtap='towrite'>
    {{titt}}
    <image src='/images/delet.png' class='delet-icon' data-name='titt' catchtap='ondelettitt' wx:if='{{titt!="请输入标题文字"}}'></image>
  </view>
</view>
<view class='content k-bai' wx:for="{{content}}" wx:key="" data-leixing='{{item.leixing}}' data-index='{{index}}' bindtap='redit'>
  <view class='txt' wx:if="{{item.leixing=='txt'}}">{{item.neirong}}</view>
  <image src='{{item.url}}' class='image' mode="widthFix" wx:if="{{item.leixing=='img'}}"></image>
  <image src='/images/delet.png' class='delet-icon' data-index='{{index}}' catchtap='ondelet' wx:if="{{content[index]!=''}}"></image>
</view>
<view class='add'>
  <image src='/images/add_06.png' bindtap='addtxt'></image>
  <image src='/images/add_03.png' bindtap='addimg'></image>
</view>
<view class='save-btn' bindtap='onsave'>上传</view>

js

// pages/edit/edit.js
Page({

  /**
   * 页面的初始数据
   */
  data: {
    titt: '请输入标题文字',
    showceng: false,
    showedittitt: false,
    showeditcontent: false,
    showreditcontent: false,
    edittitt: '',
    editcontent: '',
    reditcontent: '',
    target: '',
    content: [{
        leixing: 'txt',
        neirong: '我爱你'
      },
      {
        leixing: 'img',
        url: 'http://wechatpx.oss-cn-beijing.aliyuncs.com/card1_03.png'
      }
    ],
  },

  /**
   * 生命周期函数--监听页面加载
   */
  towrite: function(e) {
    var that = this
    var target = e.currentTarget.dataset.name
    that.setData({
      showceng: true,
      showedittitt: true,
      target: target,
      edittitt: ''
    })
  },
  editedtitt: function(e) {
    var that = this
    var target = that.target
    that.setData({
      titt: e.detail.value,
      showceng: false,
      showedittitt: false,
      [target]: e.detail.value
    })
  },
  ondelettitt: function(e) {
    var that = this
    wx.showModal({
      title: '重置标题',
      content: '您确定要重置标题吗？',
      success(res) {
        if (res.confirm) {
          that.setData({
            titt: '请输入标题文字'
          })
        } else if (res.cancel) { }
      },
      confirmColor: '#5677fc'
    })
  },
  ondelet: function(e) {
    var that = this
    var index = e.currentTarget.dataset.index
    var content = that.data.content
    wx.showModal({
      title: '删除提示',
      content: '您确定要删除这段编辑吗？',
      success(res) {
        if (res.confirm) {
          content.splice(index, 1)
          that.setData({
            content: content
          })
        } else if (res.cancel) {}
      },
      confirmColor: '#5677fc'
    })

  },
  addtxt: function() {
    var that = this
    var content = that.data.content
    that.setData({
      editcontent:'',
      showceng: true,
      showeditcontent: true
    })
  },
  editedcontent: function(e) {
    var that = this
    var input = new Object
    input.leixing = 'txt'
    input.neirong = e.detail.value
    var content = that.data.content
    content.push(input)
    that.setData({
      content:content,
      showceng: false,
      showeditcontent: false
    })
  },
  redit:function(e){
    var that = this
    var index = e.currentTarget.dataset.index
    var leixing = e.currentTarget.dataset.leixing
    var target = that.data.target
    if(leixing=='txt'){
      target = "content["+index+"].neirong"
      that.setData({
        reditcontent:'',
        showceng: true,
        showreditcontent: true,
        target: target
      })
    }else if(leixing=='img'){
      wx.chooseImage({
        count: 1,
        sizeType: ['original', 'compressed'],
        sourceType: ['album', 'camera'],
        success(res) {
          const tempFilePaths = res.tempFilePaths
          target = "content[" + index + "].url"
          that.setData({
            [target]: tempFilePaths
          })
        }
      })
    }
  },
  reditedcontent: function (e) {
    var that = this
    var target = that.data.target
    that.setData({
      [target]: e.detail.value,
      showceng: false,
      showreditcontent: false,
    })
  },
  addimg:function(){
    var that = this
    wx.chooseImage({
      count: 1,
      sizeType: ['original', 'compressed'],
      sourceType: ['album', 'camera'],
      success(res) {
        const tempFilePaths = res.tempFilePaths
        var input = new Object
        input.leixing = 'img'
        input.url = tempFilePaths
        var content = that.data.content
        content.push(input)
        that.setData({
          content: content,
        })
      }
    })
  },
  onsave:function(){
    
    wx.showToast({
      title: '上传成功！',
    })
  },
  onLoad: function(options) {

  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function() {

  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function() {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function() {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function() {

  },

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

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function() {

  }
})

wxss

/* pages/edit/edit.wxss */

page {
  background-color: #f1f1f1;
  font-size: 28rpx;
  padding-bottom: 150rpx;
}

.k-bai {
  background-color: #fff;
  padding: 30rpx;
  color: #666;
}

.txt {
  padding: 30rpx;
  border: 1rpx solid #eee;
  margin-top: 20rpx;
  position: relative;
}

.delet-icon {
  display: block;
  width: 50rpx;
  height: 50rpx;
  border-radius: 50rpx;
  position: absolute;
  right: -20rpx;
  top: -20rpx;
  z-index: 10;
}

.ceng {
  width: 750rpx;
  height: 1334rpx;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 50;
  background-color: rgba(0, 0, 0, 0.3);
}

.edit-txt {
  width: 660rpx;
  background-color: #fff;
  padding: 30rpx;
  margin: 0 auto;
  position: fixed;
  left: 50%;
  margin-left: -360rpx;
  top: 220rpx;
  z-index: 60;
}

.edit-txt .save-btn {
  display: block;
  width: 450rpx;
  height: 80rpx;
  border-radius: 80rpx;
  background-color: #5677fc;
  color: #fff;
  text-align: center;
  line-height: 80rpx;
  position: absolute;
  left: 50%;
  margin-left: -225rpx;
  bottom: -40rpx;
  box-shadow: 0 0 10rpx rgba(0, 0, 0, 0.2);
}

.edit-txt textarea {
  width: 660rpx;
  height: 500rpx;
}

.add {
  position: relative;
  padding: 20rpx 0;
  width: 200rpx;
  margin: 0 auto;
  height: 70rpx;
  background-color: #fff;
  border-radius: 0 0 20rpx 20rpx;
  box-shadow: 0 7rpx 5rpx rgba(0, 0, 0, 0.1);
}

.add image {
  display: inline-block;
  width: 70rpx;
  height: 70rpx;
}

.add image:first-child {
  margin-right: 20rpx;
  margin-left: 20rpx;
}

.content {
  margin-top: 30rpx;
  position: relative;
}

.content .delet-icon {
  right: 12rpx;
  top: 25rpx;
}

.content .image {
  display: block;
  padding: 30rpx;
  border: 1rpx solid #eee;
  margin-top: 20rpx;
  position: relative;
  width: 630rpx;
}

.save-btn {
  width: 690rpx;
  height: 90rpx;
  text-align: center;
  line-height: 90rpx;
  background-color: #5677fc;
  color: #fff;
  font-size: 34rpx;
  border-radius: 90rpx;
  position: fixed;
  left: 50%;
  margin-left: -345rpx;
  bottom: 30rpx;
  z-index: 100;
}