微信小程序实用代码段(收藏版)
(编辑:jimmy 日期: 2024/12/27 浏览:3 次 )
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 " data-current="0" bindtap="swichNav"> tab1</view> <view class=" {{currentTab==1 " 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 " data-current="0" bindtap="swichNav">tab1</text> <text class=" {{currentTab==1 " data-current="1" bindtap="swichNav">tab2 </text> <text class=" {{currentTab==2 " data-current="2" bindtap="swichNav">tab3 </text> </view> <swiper current="{{currentTab}}" bindchange="bindChange" class='swp' style="height: {{aheight"> <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="/UploadFiles/2021-04-02/del.png">四、scroll-view滚动页
<scroll-view class="scroll-view_H " scroll-x="true" bindscroll="scroll"> <view class="fxjx_b1" style="display: inline-block"> <view class="listb">1</view> </view> <view class="fxjx_b1" style="display: inline-block"> <view class="listb">2</view> </view> </scroll-view> .scroll-view_H{ white-space: nowrap; height: 600rpx; } .listb{ padding: 25rpx; white-space: normal; }五、授权登录
app.js
//app.js App({ globalData: { userInfo: null, unionid:null, token:'' }, onLaunch: function () { /* 已授权之后,自动获取用户信息 */ // 判断是否授权 wx.getSetting({ success: (res) => { //箭头函数为了处理this的指向问题 if (res.authSetting["scope.userInfo"]) { console.log("已授权"); // 获取用户信息 wx.getUserInfo({ success: (res) => { //箭头函数为了处理this的指向问题 // this.globalData.isok=true this.globalData.token='ok' var that =this console.log(res.userInfo); //用户信息结果 wx.getStorage({ key: 'unionid', success(res) { that.globalData.unionid=res.data } }) this.globalData.userInfo = res.userInfo; if (this.userInfoReadyCallback) { //当index.js获取到了globalData就不需要回调函数了,所以回调函数需要做做一个判断,如果app.js中有和这个回调函数,那么就对这个函数进行调用,并将请求到的结果传到index.js中 this.userInfoReadyCallback(res.userInfo); } } }) } else{ console.log("未授权"); wx.removeStorage({ key: 'unionid' }) } } }) } })wxml
<button open-type="getUserInfo" lang="zh_CN" bindgetuserinfo="onGotUserInfo" class="btn" data-url='../yzzs/yzzs'> 防疫针助手 </button>index.js
// pages/index/index.js const app = getApp() Page({ data: { token:'' }, onGotUserInfo: function (e) { var that = this if (this.data.token != 'ok' && app.globalData.token != 'ok') { wx.getSetting({ success: (res) => { //箭头函数为了处理this的指向问题 if (res.authSetting["scope.userInfo"]) { wx.login({ success: function (data) { console.log('获取登录 Code:' + data.code) var postData = { code: data.code }; wx.request({ url: 'https://m.renyiwenzhen.com/rymember.php"unionid", data: res.data.unionid }) wx.navigateTo({ url: e.target.dataset.url }) }, fail: function () { console.log('1'); } }) }, fail: function () { console.log('登录获取Code失败!'); } }) } } }) } else{ wx.navigateTo({ url: e.target.dataset.url }) } } })六、发送请求
wx.request({ url: 'https://m.renyiwenzhen.com/xcx_ajax.php"htmlcode">"window": { "backgroundTextStyle": "light", "navigationBarBackgroundColor": "#3EC8C8", "navigationBarTitleText": "乳孕呵护", "navigationBarTextStyle": "white" }局部标题栏
{ "usingComponents": {}, "navigationBarBackgroundColor": "#fff", "navigationBarTextStyle": "black", "navigationBarTitleText": "附近医院" }全局底部栏
"tabBar": { "color": "#e4e4e4", "selectedColor": "#333", "list": [ { "pagePath": "pages/index/index", "text": "发现", "iconPath": "./images/find.png", "selectedIconPath": "./images/finded.png" }, { "pagePath": "pages/his/his", "text": "医院", "iconPath": "./images/his.png", "selectedIconPath": "./images/hised.png" }, { "pagePath": "pages/stu/stu", "text": "经验", "iconPath": "./images/stu.png", "selectedIconPath": "./images/stued.png" }, { "pagePath": "pages/my/my", "text": "我的", "iconPath": "./images/my.png", "selectedIconPath": "./images/myed.png" } ] }八、navigator
1、wxml
<navigator url="/pages/hishome/hishome" open-type="navigate" hover-class="none"> 底部栏没有的路由 </navigator> <navigator open-type="switchTab" url="/pages/his/his" hover-class="none"> 底部栏有的路由 </navigator>2、js
go: function (e) { wx.navigateTo({ url: '../eatxq/eatxq"&name=" + e.currentTarget.dataset.name }) }九、加载条
<loading hidden="{{onff}}">加载中</loading> <view>页面</view>加载完成true
wx.request({ url: 'https://m.renyiwenzhen.com/xcx_ajax.php"htmlcode"><view class="txt"> <rich-text nodes="{{msg}}" ></rich-text> </view>利用正则修改收到的数据
wx.request({ url: 'https://m.renyiwenzhen.com/xcx_ajax.php"<p style='line-height: 24px; font-size:15px;text-align: justify;margin:15px 0;'>") }) } })十一、filter过滤数据
1、在根目录下的utils文件夹里创建一个名为filter.wxs文件 2、写入自己要定义的条件
var xb=function (v) { var xingb='' if(v==1){ xingb="男宝宝" } else{ xingb="女宝宝" } return xingb } module.exports = { xb:xb }3、在页面中引入使用
上一篇:js实现多图和单图上传显示<wxs src="/UploadFiles/2021-04-02/filter.wxs">十二、检测版本更新
app.js
onLaunch: function () { if (wx.canIUse('getUpdateManager')) { const updateManager = wx.getUpdateManager() updateManager.onCheckForUpdate(function (res) { // 请求完新版本信息的回调 if (res.hasUpdate) { updateManager.onUpdateReady(function () { wx.showModal({ title: '更新提示', content: '新版本已经准备好,是否重启应用?', success: function (res) { // res: {errMsg: “showModal: ok”, cancel: false, confirm: true} if (res.confirm) { // 新的版本已经下载好,调用 applyUpdate 应用新版本并重启 updateManager.applyUpdate() } } }) }) updateManager.onUpdateFailed(function () { // 新的版本下载失败 wx.showModal({ title: '已经有新版本了哟~', content: '新版本已经上线啦,请您删除当前小程序,重新搜索打开哟' }) }) } }) } }十三、点击tab跳转对应的的项目页面
我们经常会遇到这种需求:
点击对应的的tab,这里比如说是A页。
跳转到对应项目的页面,这里比如说是B页。
A页:
<view class="project_nab ovf"> <view class="on"> 详情 </view> <view class="project_item" bindtap="goitem" data-url='jd'>建档</view> <view class="project_item" bindtap="goitem" data-url='cj'>产检</view> <view class="project_item" bindtap="goitem" data-url='fm'>分娩</view> </view> goitem:function (e) { wx.navigateTo({ url: '/pages/item/item"htmlcode"><view class="top1 ovf"> <view class="" ><navigator url="/pages/hishome/hishome" open-type="navigate">详情</navigator></view> <view class=" {{currentTab==0 " data-current="0" bindtap="swichNav"> 产检 </view> <view class=" {{currentTab==1 " data-current="1" bindtap="swichNav"> 建档 </view> <view class=" {{currentTab==2 " data-current="2" bindtap="swichNav"> 分娩 </view> </view> onLoad: function (options) { var that = this; console.log(options.url) if (options.url === 'cj') { that.setData({ currentTab: '0', btn: '产检', set: 'cj' }); } else if (options.url === 'jd') { that.setData({ currentTab: '1', btn: '建档', set: 'jd' }); } else { that.setData({ currentTab: '2', btn: '分娩', set: 'fm' }); } }总结
以上所述是小编给大家介绍的微信小程序实用代码段,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对网站的支持!
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