Question: 1. How do you do drop-down box linkage between provinces and cities, product category linkage, or department linkage? Should you use ajaxpro.dll or jquery ajax??
Answer: Yes, stay Continue reading below.
No, please reply with your method
Conclusion: Repeating the work every time to create linked drop-down boxes is tiring and makes me want to die!! After reading this article, you may be able to find a better way to achieve it. Infinite level (theoretically) linkage drop-down box, maybe only 10 seconds is enough.
In this way, a plug-in that automatically generates linkage drop-down boxes was born...
This plug-in depends on the minimum version of jquery1.4.2 Test by yourself.
No nonsense.
Code:
Calling method:
var data= [{ "id": 25, "text" : "Huaian Branch", "children": [{ "id": 26, "text": "Office (Administrative Personnel Training)"}] }, { "id": 52, "text": "R&D Department" }, { "id": 53, "text": "Finance Department"}]
$("#div_autoComboBox").AutoComboBox({
cssClass: "autoComboBox",
nullDispaly: true,
//url: "ComboBoxTreeDept_Data.aspx",
//If remote data is not used, you can use the local data source and use the data variable defined above. Note: If the url is not empty, the remote data source will be used first
// ps: Only request the database once, the data source will be stored on the client
data:data,
firstValue: [true, "==Please select==", "==Please select=="] / /Whether to automatically create the first value, this value is usually please select, no limit to wait
});
Result: In this way, an infinite level (theoretical) linkage drop-down box comes out .. If you copy the above code and modify the url parameters for 10 seconds, right? Note: Regarding the json format, including the name, please convert it yourself. This source code also contains a dll that only converts json for this plug-in.
(After quotation:
///dataset data source
///To display text
///id,, you know it
///parent id, you also know it
///Ignore....
string treeJson = zlddEasyUiHelp.CreateTree.DataSetToTree(ds_department, "Dept_Name", "Dept_ID", "Dept_PId",false);
)
Ask: Me How to get the value selected by the user.?
Answer: It can be done with one line of code and supports multiple parameter overloading
$("#div1").ComboBoxGetValue([index],[ErrorFn]);
//Optional parameter description:
//index, get the first The values of several drop-down boxes, the last one by default (if not filled in, the last value will be obtained)
// ErrorFn, an error is encountered when obtaining the value, such as: assuming that it is now a province-city linkage, you want to obtain the third drop-down box box (area), but the user only selects the city, which will not be obtained, then the method passed in is called
//The callback method is written as follows:
var ErrorFn = function () {
alert("wrong");
}
Do you know how to use it when you see this??? If not, you know, please reply....
Continue Let's talk about the "modify" function
For example: the user just selected his own address, so now the user needs to modify it. The user just selected "district", we need to initialize the linkage drop-down box and set the default for district, city and province. Value.
is very simple: adding a sentence to the above code (code marked in red below) will automatically initialize the linkage drop-down box with default value
Example:
$("#div_autoComboBox").AutoComboBox({
cssClass: "autoComboBox",
nullDispaly : true,
//url: "ComboBoxTreeDept_Data.aspx",
//If remote data is not used, you can use the local data source and use the data variable defined above. Note: If the url is not empty, remote data will be used first. Source
// ps: Only request the database once, the data source will be stored on the client
data:data,
defaultValue: 76,
firstValue: [true, "==Please select==" , "==Please select=="] //Whether to automatically create the first value. This value is usually Please select, no limit.
});
"수정" 기능의 탄생 배경에 대해 궁금하신 분들은 꼭 읽어보시길...
이 플러그인은 기본값을 설정할 수 없다는 것, 즉 자체적으로 설정할 수 없다고 합니다. -드롭박스를 기본값으로 초기화
그런데 미인이 "네가 하고 싶으면 내가 해줄게"라고 유혹했기 때문에...
소개는 여기까지입니다
소스코드 다운로드 /201012/yuanma/AutoComboBoxs.rar(업데이트)
(소스코드에는 플러그인 소스코드만 포함되어 있습니다) , json 형식 문자열을 변환하는 dll)
2011년 1월 4일 17:12:39 업데이트
버전 v1.1
콘텐츠 업데이트
알려진 일부 수정 버그 (서브클래스에 "선택해주세요" 등의 최상위 옵션이 없으면 세 번째 레벨 생성 불가) )
선택한 아이템 객체를 획득하는 메소드 추가
성능 최적화
원문: http://www.cnblogs.com/337212522/archive/2010/12/21/1912381.html

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing

This article demonstrates frontend integration with a backend secured by Permit, building a functional EdTech SaaS application using Next.js. The frontend fetches user permissions to control UI visibility and ensures API requests adhere to role-base

JavaScript is the core language of modern web development and is widely used for its diversity and flexibility. 1) Front-end development: build dynamic web pages and single-page applications through DOM operations and modern frameworks (such as React, Vue.js, Angular). 2) Server-side development: Node.js uses a non-blocking I/O model to handle high concurrency and real-time applications. 3) Mobile and desktop application development: cross-platform development is realized through ReactNative and Electron to improve development efficiency.

The latest trends in JavaScript include the rise of TypeScript, the popularity of modern frameworks and libraries, and the application of WebAssembly. Future prospects cover more powerful type systems, the development of server-side JavaScript, the expansion of artificial intelligence and machine learning, and the potential of IoT and edge computing.

JavaScript is the cornerstone of modern web development, and its main functions include event-driven programming, dynamic content generation and asynchronous programming. 1) Event-driven programming allows web pages to change dynamically according to user operations. 2) Dynamic content generation allows page content to be adjusted according to conditions. 3) Asynchronous programming ensures that the user interface is not blocked. JavaScript is widely used in web interaction, single-page application and server-side development, greatly improving the flexibility of user experience and cross-platform development.

Python is more suitable for data science and machine learning, while JavaScript is more suitable for front-end and full-stack development. 1. Python is known for its concise syntax and rich library ecosystem, and is suitable for data analysis and web development. 2. JavaScript is the core of front-end development. Node.js supports server-side programming and is suitable for full-stack development.


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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

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

Zend Studio 13.0.1
Powerful PHP integrated development environment