The examples in this article describe the usage of AngularJS modular operations. I share it with you for your reference. The details are as follows:
In the previous tutorials, the code is relatively small. In order to facilitate the explanation of the problem, the author wrote all the controller codes in the HTML page. In fact, this is not a good programming habit. , and the maintainability is poor. The usual approach is to write the code that handles business logic in a separate JS file, and then introduce the file into the HTML page.
However, this will bring new problems. Our controllers are all defined in the global namespace. Suppose we have a public JS file and introduce this JS in both the login page and the password change page. Developer A and B The developer heroes have the same idea, naming the controllers UserController, which will lead to naming conflicts. And when we add a new controller, we always have to worry about whether there is already a controller with the same name. Is the scalability of the code very poor?
The modules in AngularJS can solve this problem very well. Next, let’s see how AngularJs handles naming conflicts.
Code List 1. tutorial04_1.html
<!DOCTYPE html>
<html ng-app="loginMod">
<head lang="en">
<meta charset="UTF-8">
<script type="text/javascript" src="angular-1.3.0.14/angular.js"></script>
<title>tutorial04_1</title>
</head>
<body>
<div ng-controller="UserController">
用户名：<input type="text" ng-model="name" placeholder="用户名"/>
密码：<input type="password" ng-model="pword" placeholder="密码"/>
<button ng-click="login()">提交</button>
<p>您输入的用户名：{{name}}</p>
<p>您输入的密码：{{pword}}</p>
</div>
<script type="text/javascript" src="js/tutorial04.js">
</script>
</body>
</html>
Code List 2. tutorial04_2.html
<!DOCTYPE html>
<html ng-app="pwordMod">
<head lang="en">
<meta charset="UTF-8">
<script type="text/javascript" src="angular-1.3.0.14/angular.js"></script>
<title>tutorial04_2</title>
</head>
<body>
<div ng-controller="UserController">
密码：<input type="password" ng-model="pword" placeholder="密码"/>
<button ng-click="changePwrd()">提交</button>
<p>您输入的密码：{{pword}}</p>
</div>
<script type="text/javascript" src="js/tutorial04.js">
</script>
</body>
</html>
Code List 3. tutorial04.js
var loginMod = angular.module("loginMod", []);
loginMod.controller("UserController",function($scope,$log)
{
$scope.name="admin";
$scope.pword="123456";
$log.info( $scope.name);
$log.info( $scope.pword);
$scope.login = function()
{
alert("登录");
}
}
);
var pwordMod = angular.module("pwordMod", []);
pwordMod.controller("UserController",function($scope,$log)
{
$scope.pword="123456";
$scope.changePwrd = function()
{
alert("修改密码");
}
}
);
We have login page tutorial04_1. html and password change page tutorial04_2.html, the controller code is written in tutorial04.js, and the same controller UserController is defined in both pages.
var loginMod = angular.module("loginMod", []);
Define the module through this line of code. The first parameter is the module name. The second parameter is an array, which is optional. If this parameter is specified, a new module will be created. If not specified, it will be retrieved from the configuration.
loginMod.controller("UserController",function($scope,$log)...
Add a controller to the module through the controller function. The first parameter is the controller name, and the second parameter is the controller implementation part.
Then you can use ng-app="loginMod" and ng-app="pwordMod" in tutorial04_1.html and tutorial04_2.html to specify which module the controller in the page belongs to.
You can see when you run the page in the browser that the UserController controller in the module is not used for different page calls:
Beyond the Browser: JavaScript in the Real WorldApr 12, 2025 am 12:06 AMJavaScript'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.
Building a Multi-Tenant SaaS Application with Next.js (Backend Integration)Apr 11, 2025 am 08:23 AMI 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
How to Build a Multi-Tenant SaaS Application with Next.js (Frontend Integration)Apr 11, 2025 am 08:22 AMThis 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: Exploring the Versatility of a Web LanguageApr 11, 2025 am 12:01 AMJavaScript 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 Evolution of JavaScript: Current Trends and Future ProspectsApr 10, 2025 am 09:33 AMThe 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.
Demystifying JavaScript: What It Does and Why It MattersApr 09, 2025 am 12:07 AMJavaScript 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.
Is Python or JavaScript better?Apr 06, 2025 am 12:14 AMPython 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.
How do I install JavaScript?Apr 05, 2025 am 12:16 AMJavaScript does not require installation because it is already built into modern browsers. You just need a text editor and a browser to get started. 1) In the browser environment, run it by embedding the HTML file through tags. 2) In the Node.js environment, after downloading and installing Node.js, run the JavaScript file through the command line.
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
SublimeText3 Mac version
God-level code editing software (SublimeText3)
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 Chinese version
Chinese version, very easy to use
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
