前言

排名不分先后，按自己的习惯来的。

总结经验，不喜勿喷哦~

一、tab切换

<view class=" {{currentTab==0 ? 'select' : ''}}" data-current="0" bindtap="swichNav"> tab1</view>
<view class=" {{currentTab==1 ? 'select' : ''}}" data-current="1" bindtap="swichNav"> tab2</view>

Page({
data:{
 // tab切换 
 currentTab: 0,
},
swichNav: function (e) {
 var that = this;
 if (this.data.currentTab === e.target.dataset.current) {
 return false;
 } else {
 that.setData({
 currentTab: e.target.dataset.current
 })
 }
 },

})

二、swiper切换

<view>
  <text class=" {{currentTab==0 ? 'select' : ''}}" data-current="0" bindtap="swichNav">tab1</text>
  <text class=" {{currentTab==1 ? 'select' : ''}}" data-current="1" bindtap="swichNav">tab2 </text>
  <text class=" {{currentTab==2 ? 'select' : ''}}" data-current="2" bindtap="swichNav">tab3 </text>
  </view>
 <swiper current="{{currentTab}}" bindchange="bindChange" class='swp' >
 <swiper-item>页面1</swiper-item>
 <swiper-item>页面2</swiper-item>
 <swiper-item>页面3</swiper-item>
 </swiper>

Page({
data:{
 currentTab: 0,
 aheight: ''
},
// 滑动切换
 bindChange: function (e) {
 var that = this;
 that.setData({
 currentTab: e.detail.current
 });
 },
 //点击tab切换
 swichNav: function (e) {
 var that = this;
 if (this.data.currentTab === e.target.dataset.current) {
 return false;
 } else {
 that.setData({
 currentTab: e.target.dataset.current
 })
 }
 },
 // swiper 自适应高度
 onLoad: function (options) {
 var that = this
 wx.getSystemInfo({
 success: function (res) {
 that.setData({
  aheight: res.screenHeight
 });
 }
 })
 },
})

三、图片上传

 <view class="ovf img_box">
  <block wx:for="{{img_arr}}" wx:key="{{item.id}}" bindtap="del">
  <view class='logoinfo' data-index="{{index}}">
   <view class="del">
   <image src="http://192.168.2.61/wx_ry/del.png" mode="widthFix" bindtap="deleteImage"></image>
   </view>
   <image src='{{item}}' mode="widthFix"></image>
  </view>
  </block>
  <view class="upload">
   <image src="http://192.168.2.61/wx_ry/add.png" mode="widthFix" bindtap="upimg"></image>
  </view>
 </view>

.upload { width: 20%; float: left; margin-top:33rpx ; }
.upload image{ width: 100%; }
.logoinfo{ width: 20%; float: left; margin-right:2% ; }
.del{ width: 20%; float: right; }
.del image{ width: 100%; }
.logoinfo image{ width: 100%; }

page({
data:{
 img_arr: []
},
 // 图片上传
 upimg: function () {
 var that = this;
 if (this.data.img_arr.length < 3) {
 wx.chooseImage({
 sizeType: ['original', 'compressed'],
 success: function (res) {
  that.setData({
  img_arr: that.data.img_arr.concat(res.tempFilePaths),
  })

 }
 })
 } else {
 wx.showToast({
 title: '最多上传三张图片',
 icon: 'loading',
 duration: 3000
 });
 }
 },
 // 删除图片
 deleteImage: function (e) {
 var that = this;
 var index = e.currentTarget.dataset.index; //获取当前长按图片下标
 console.log(that.data.img_arr)
 wx.showModal({
 title: '提示',
 content: '确定要删除此图片吗？',
 success: function (res) {
 if (res.confirm) {
  console.log('点击确定了');
  that.data.img_arr.splice(index, 1);
 } else if (res.cancel) {
  console.log('点击取消了');
  return false;
 }
 that.setData({
  img_arr: that.data.img_arr
 });
 }
 })
 },
 // 上传
 upload: function () {
 var that = this
 for (var i = 0; i < this.data.img_arr.length; i++) {
 wx.uploadFile({
 url: 'https:***/submit',
 filePath: that.data.img_arr[i],
 name: 'content',
 formData: adds,
 success: function (res) {
  console.log(res)
  if (res) {
  wx.showToast({
  title: '已提交发布！',
  duration: 3000
  });
  }
 }
 })
 }
 this.setData({
 formdata: ''
 })
 },
 // 提交
 formSubmit: function (e) {
 console.log('form发生了submit事件，携带数据为：', e.detail.value)
 }
})