This time I will bring you the concept of using angular independent scope. What are the precautions for using angular independent scope? The following is a practical case, let’s take a look. <!DOCTYPE html><html lang="en"><head>
<meta charset="UTF-8">
<title>Document</title></head><body ng-app="myApp" ng-controller="mainController">
<ceshi></ceshi>
<script src="angular.js"></script>
<script>
var myApp = angular.module('myApp',[]);
myApp.directive('ceshi',function(){ var option = {
template:'<p>{{abc}}</p>'
}; return option;
});
myApp.controller('mainController',function($scope){
$scope.abc = 'ericzheng';
}); </script></body></html>When we create a command ourselves, it is definitely not possible to use it only once. It must be used repeatedly, sometimes within a page or within a
Need to be used multiple times. Similar to the above scenario, changing data in any input box will cause the data in other tags to change at the same time. This is obviously not what we want. At this time, an independent scope is needed.
To convert to an independent scope, you only need one line of code:
<!DOCTYPE html><html lang="en"><head>
<meta charset="UTF-8">
<title>Document</title></head><body ng-app="myApp" ng-controller="mainController">
<ceshi></ceshi>
<script src="angular.js"></script>
<script>
var myApp = angular.module('myApp',[]);
myApp.directive('ceshi',function(){ var option = {
template:'<p>{{abc}}</p>',
scope:{}
}; return option;
});
myApp.controller('mainController',function($scope){
$scope.abc = 'ericzheng';
}); </script></body></html>One-way
Data bindingOperator, the content within double quotes is treated as string for binding <!DOCTYPE html><html lang="en"><head>
<meta charset="UTF-8">
<title>Document</title></head><body ng-app="myApp" ng-controller="mainController">
<my-directive name="aaaa"></my-directive>
<script src="angular.js"></script>
<script>
var myApp = angular.module('myApp',[]);
myApp.directive('myDirective',function(){ var option = {
template:'<p>wew{{name}}<p/>',
scope:{
name:'@'
}
}; return option;
});
myApp.controller('mainController',function($scope){
}); </script></body></html>One-way binding, obtains the value from the attribute of the current instruction, and then assigns it to the current independent scope This attribute
Two-way data binding
=The operator is bound to a variable
<!DOCTYPE html><html lang="en"><head>
<meta charset="UTF-8">
<title>Document</title></head><body ng-app="myApp" ng-controller="mainController">
<input type="text" ng-model="abc">
<my-directive name="abc"></my-directive>
<script src="angular.js"></script>
<script>
var myApp = angular.module('myApp',[]);
myApp.directive('myDirective',function(){ var option = {
template:'<p>wew{{name}}<input ng-model="name"><p/>',
scope:{
name:'='
}
}; return option;
});
myApp.controller('mainController',function($scope){
$scope.abc = 'ericzheng';
}); </script></body></html>name="abc"This is In the core, what is connected to the left is the independent scope, and what is connected to the right is the model in the external scope abc
##The behavior of using the parent scope
<!DOCTYPE html><html lang="en"><head>
<meta charset="UTF-8">
<title>Document</title></head><body ng-app="myApp" ng-controller="mainController">
<my-directive fn1="fn2(name)"></my-directive>
<script ></script>
<script>
var myApp = angular.module('myApp',[]);
myApp.directive('myDirective',function(){ var option = { restrict:'E', template:'<button ng-click="fn1({name:\'username\'})">wfewef</button>', scope:{ fn1:'&'
}
}; return option;
});
myApp.controller('mainController',function($scope){
$scope.fn2 = function(attr){ console.log(attr);
}
}); </script></body></html>
How to understand: 
Regardless of how the instruction is implemented internally, first look at how to use it, and then look at the corresponding How are the variables or methods in the parent scope defined.
I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!
Detailed explanation of the use of scopel directive in angular
Detailed explanation of the use of Angular Material
Detailed explanation of the use of $apply() in angularjs
The above is the detailed content of The concept of using independent scopes in Angular. For more information, please follow other related articles on the PHP Chinese website!
JavaScript Engines: Comparing ImplementationsApr 13, 2025 am 12:05 AMDifferent 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.
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.
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
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
VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
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
WebStorm Mac version
Useful JavaScript development tools
