JQuery form validation plug-in EasyValidator usage analysis_jquery
The example in this article describes the usage of JQuery form validation plug-in EasyValidator. Share it with everyone for your reference. The details are as follows:
The purpose of this plug-in is: users do not need to write a line of JS verification code, they only need to add the corresponding verification attributes to the form to be verified, making the verification function easy to maintain, scalable, and easier to use.
DEMO already contains commonly used regular expressions, which can be reused directly. In order to consider scalability, you can write your own regular expressions according to the special needs of different users.
Function implemented by EasyValidator:
1. Prompt function (add tip="the text you want to prompt" in the form or other tags)
For example:
or
2. Ordinary form verification (add reg="regular expression" to the form)
For example:
Ordinary form validation DEMO: http://easyvalidator.googlecode.com/svn/trunk/index.html
3. AJAX form verification (add url="verification system address" to the form)
For example:
AJAX verification DEMO: There is no online demonstration. Please run ajax_demo.html locally and request the remote PHP file. Of course it can be JSP or ASP. I have preset some existing data in the program for users to refer to.
4. Ordinary form verification AJAX form verification (after passing the ordinary verification, perform AJAX verification)
For example:
5. Extended function form validation (some special business needs):
These special needs are based on business. Here are some situations:
1. Verification of the number of checkbox selection boxes, such as limiting others to select at least 1 checkbox and up to 5 checkboxes.
2. Compare multiple forms. For example, the [Start Time Form] must be less than or equal to the [End Time Form] or the two password forms must be equal when used for registration, etc.
Due to the particularity of this situation, users have to write their own business logic code. The official has provided the extendsValidate extension function, and just write their own logic code in it.
Extended function form validation DEMO: http://easyvalidator.googlecode.com/svn/trunk/extends_demo.html
BUG fix log:
2010-9-24: Fix multiple FORM submission bugs on the same page, TIP misplacement bug
2010-9-26: Added bgiframe plug-in to fix the problem that TIP cannot be masked in IE6
2010-9-27: Add extension API and reconstruct core library
2011-1-1 : Separate the TIP of form verification, making TIP, URL, and REG exist as separate components, which is more flexible!
2011-1-28: Modified the AJAX TIP error correction bug, modified the logic, and set the encoding of the remote program validate_user.php of the AJAX request to GB2312.
Official download address: http://code.google.com/p/easyvalidator/downloads/list
Or click here to download from this site. http://www.jb51.net/jiaoben/32303.html
Online regex validator: http://regexpal.com/
I hope this article will be helpful to everyone’s web programming design.

The future trends of Python and JavaScript include: 1. Python will consolidate its position in the fields of scientific computing and AI, 2. JavaScript will promote the development of web technology, 3. Cross-platform development will become a hot topic, and 4. Performance optimization will be the focus. Both will continue to expand application scenarios in their respective fields and make more breakthroughs in performance.

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.


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

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

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),

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.

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.

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