How to implement page jump and value transfer in WeChat mini program
This article mainly introduces the methods of WeChat applet to realize page jump and value transfer and obtain value. It summarizes and analyzes the common operation skills of WeChat applet page jump and value transfer in the form of examples. Friends in need can refer to the following
The example in this article describes the method of WeChat applet to realize page jump, transfer value and obtain value. I share it with you for your reference. The details are as follows:
In Android, page jumps and values are passed through bundles. Now let’s study the list jumps and page values of mini programs.
my.wxml
<view class="container"> <view bindtap="bindViewTap" class="userinfo"> <image class="userinfo-avatar" src="{{userInfo.avatarUrl}}" background-size="cover"></image> <text class="userinfo-nickname">{{userInfo.nickName}}</text> </view> <view class="info_list"> <block wx:for="{{userListInfo}}" > <view class="weui_cell" data-index="{{item.index}}" id="{{item.index}}" bindtap="userinfo_item"> <view class="weui_cell_hd"> <image src="{{item.icon}}"></image> </view> <view class="weui_cell_bd"> <view class="weui_cell_bd_p"> {{item.text}} </view> </view> <view wx:if="{{item.isunread}}" class="badge">{{item.unreadNum}}</view> <view class="with_arrow"></view> </view> </block> </view> </view>
my.js
var app = getApp() Page({ data: { userInfo: {}, userListInfo: [{ icon: '../../images/iconfont-dingdan.png', text: '我的订单', isunread: true, unreadNum: 2, index:1 }, { icon: '../../images/iconfont-kefu.png', text: '联系客服', index: 5 }, { icon: '../../images/iconfont-help.png', text: '常见问题', index: 6 }] }, onLoad: function () { var that = this //调用应用实例的方法获取全局数据 app.getUserInfo(function (userInfo) { //更新数据 that.setData({ userInfo: userInfo }) }) }, userinfo_item: function (e) { var index = e.target.dataset.index; console.log("----index----" + index) console.log('-----id-----' + e.currentTarget.id) var app = getApp(); //设置全局的请求访问传递的参数 app.requestId = e.currentTarget.id; app.requestIndex = index; } })
WeChat applet sets the id method identifier to pass the value
In At the item to be jumped, set an id and assign the corresponding key value to the current id.
For example, id="{{item.index}}"
After that, we will use js Get it from the response event of bindtap and pass it to the next interface;
Get the value passed by the id
Get the set id value through e.currentTarget.id;
Get the set id value and pass it through the setting Pass the value in the form of a global object,
Get the global object var app=getApp();
//Set the parameters passed by the global request access app.requestDetailid=id;
In debugging mode: We can also view the id value of each item we set in wxml
By using the data-xxxx method identifier to pass The value
is passed by using the method identifier of data - xxxx. xxxx can customize the name than the data-index in my.wxml.
How to get the value passed by data-xxxx?
In the response event of bindtap in js:
Find the data layer by layer through data analysis, var id=e.target.dataset.index
(according to the name of your data-id )
For example, the two prints in js are IDs obtained in two different ways.
How WeChat applet gets values across pages
Set the value to be passed according to the above method. After the page jumps, we need to get the value on the next page. The data (This data has been set as a global variable before being passed ) is equivalent to adding a new key to the global variable, and the value
is received in the js page after the jump. Data detail.js
The value is also obtained through the global method (that is, it is the same as the value of a variable in app.js)
var id=getApp().requestId; var index=getApp().requestIndex; console.log(id); console.log(index);
Pass parameters through the link:
wx.navigateTo({ url: '/pages/account/feedback/feedback?test=feedback_test&name=jia', success: function(res) {}, fail: function(res) {}, complete: function(res) {}, })
Passed when you click to jump to the page? method to pass parameters. Do the following reception in the JS of the page after the jump:
onLoad: function (e) { var movieid = getApp().requestId; var movieIndex = getApp().requestIndex; console.log("-----feedback--movieid--" + movieid +" " + movieIndex); console.log("-----feedback--test--" + e.test); console.log("-----feedback--name--" + e.name); },
I feel that the better way is to pass parameters through links. The first method is somewhat like page jump in Android, passing some The parameters are written to the Application, and the second is to pass them through the bundle method. Summary of the front-end novice, I hope that students with rich experience in front-end can provide more ideas.
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
Related articles:
How to implement the web version of the calculator in JS
How to implement the parabolic trajectory of the ball using JS
How to implement binary tree traversal using JavaScript
How to implement cookie cross-domain in axios
In JavaScript How to achieve elastic effect
The above is the detailed content of How to implement page jump and value transfer in WeChat mini program. For more information, please follow other related articles on the PHP Chinese website!

Both Python and JavaScript's choices in development environments are important. 1) Python's development environment includes PyCharm, JupyterNotebook and Anaconda, which are suitable for data science and rapid prototyping. 2) The development environment of JavaScript includes Node.js, VSCode and Webpack, which are suitable for front-end and back-end development. Choosing the right tools according to project needs can improve development efficiency and project success rate.

Yes, the engine core of JavaScript is written in C. 1) The C language provides efficient performance and underlying control, which is suitable for the development of JavaScript engine. 2) Taking the V8 engine as an example, its core is written in C, combining the efficiency and object-oriented characteristics of C. 3) The working principle of the JavaScript engine includes parsing, compiling and execution, and the C language plays a key role in these processes.

JavaScript is at the heart of modern websites because it enhances the interactivity and dynamicity of web pages. 1) It allows to change content without refreshing the page, 2) manipulate web pages through DOMAPI, 3) support complex interactive effects such as animation and drag-and-drop, 4) optimize performance and best practices to improve user experience.

C and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

WebStorm Mac version
Useful JavaScript development tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 English version
Recommended: Win version, supports code prompts!
