Home Web Front-end JS Tutorial How to Prevent AngularJS Route Change Flickering by Delaying Until Model Loads?

How to Prevent AngularJS Route Change Flickering by Delaying Until Model Loads?

Nov 26, 2024 pm 10:51 PM

How to Prevent AngularJS Route Change Flickering by Delaying Until Model Loads?

Delaying AngularJS Route Change Until Model Loaded to Prevent Flicker

AngularJS provides a convenient way to manage routing in web applications. However, there are scenarios where you may want to delay showing a new route until after the corresponding models and data have been loaded from the server. This can be useful to prevent flickering or blank page displays while the data is being retrieved.

The $routeProvider.Resolve Property

The $routeProvider.resolve property allows you to specify dependencies that need to be resolved before a route change can occur. This means that the route change will be delayed until these dependencies have been met.

Defining a Route with Resolve

To define a route that delays the route change until the model has been loaded, simply specify the resolve property on the route configuration. For example:

$routeProvider.when('/projects', {
  templateUrl: 'partials/project-list.html',
  controller: PhoneListCtrl,
  resolve: PhoneListCtrl.resolve
});
Copy after login

Implementing the Resolve Function

The resolve function is responsible for returning a promise. The route change will not proceed until this promise is resolved. Here is an example of a resolve function that retrieves a list of projects using the $resource service:

PhoneListCtrl.resolve = {
  phones: function (Phone, $q) {
    // Create a deferred object to resolve the promise later
    var deferred = $q.defer();

    // Fetch the projects using $resource and resolve the promise when successful
    Phone.query(function (successData) {
      deferred.resolve(successData);
    }, function (errorData) {
      deferred.reject(); // Optionally pass error data here
    });

    // Return the promise
    return deferred.promise;
  },
  // For demonstration purposes, add a delay to the resolve
  delay: function ($q, $defer) {
    var delay = $q.defer();
    $defer(delay.resolve, 1000);
    return delay.promise;
  }
};
Copy after login

Once the resolve function is complete, the corresponding controller can access the resolved data, such as the list of projects.

Prevent Flickering While Loading Data

While the data is being loaded, you can prevent flickering by continuing to display the current page. This can be achieved by using the ng-switch directive to conditionally display the loading state or the loaded data.

Demo and Source Code

For a working example and source code, please refer to:

  • Demo: http://mhevery.github.com/angular-phonecat/app/#/phones
  • Source: https://github.com/mhevery/angular-phonecat/commit/ba33d3ec2d01b70eb5d3d531619bf90153496831

The above is the detailed content of How to Prevent AngularJS Route Change Flickering by Delaying Until Model Loads?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1672
14
PHP Tutorial
1277
29
C# Tutorial
1257
24
Python vs. JavaScript: The Learning Curve and Ease of Use Python vs. JavaScript: The Learning Curve and Ease of Use Apr 16, 2025 am 12:12 AM

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

JavaScript and the Web: Core Functionality and Use Cases JavaScript and the Web: Core Functionality and Use Cases Apr 18, 2025 am 12:19 AM

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

JavaScript in Action: Real-World Examples and Projects JavaScript in Action: Real-World Examples and Projects Apr 19, 2025 am 12:13 AM

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.

Understanding the JavaScript Engine: Implementation Details Understanding the JavaScript Engine: Implementation Details Apr 17, 2025 am 12:05 AM

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python vs. JavaScript: Community, Libraries, and Resources Python vs. JavaScript: Community, Libraries, and Resources Apr 15, 2025 am 12:16 AM

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

Python vs. JavaScript: Development Environments and Tools Python vs. JavaScript: Development Environments and Tools Apr 26, 2025 am 12:09 AM

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.

The Role of C/C   in JavaScript Interpreters and Compilers The Role of C/C in JavaScript Interpreters and Compilers Apr 20, 2025 am 12:01 AM

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.

From Websites to Apps: The Diverse Applications of JavaScript From Websites to Apps: The Diverse Applications of JavaScript Apr 22, 2025 am 12:02 AM

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.

See all articles