Use a route resolve when you want to decide to cancel the route before ever transitioning to the View. When creating a directive that makes sense as a stand-alone element, allow restrict E and optionally restrict A . Generally, if it could be its own control, E is appropriate. General guideline is allow EA but lean towards implementing as an element when it’s stand-alone and as an attribute when it enhances its existing DOM element.

The same components are now separated into their own files. Define 1 component per file, recommended to be less than 400 lines of code. The previous version of the style guide can be found here.

Handling Exceptions with Promises

Unit testing helps maintain clean code, as such I included some of my recommendations for unit testing foundations with links for more information. Keep a flat folder structure as long as possible. When you get to 7+ files, begin considering separation. The following code is not using minification safe dependencies. Avoid using the shortcut syntax of declaring dependencies without using a minification-safe approach.

Declare modules without a variable using the setter syntax. Use unique naming conventions with separators for sub-modules. My friend Ward has certainly helped influence the ultimate evolution of this guide. Angular Stash is a collection of hand-picked resources and our own articles and interviews with Angular developers. Until then, here is a quick glimpse at a project structure that I have been working with.

Your threshold may be different, so adjust as needed. Separate route configuration into its own file. Examples might be app.route.js for the main module and admin.route.js for the admin module.

If you have questions with the guide, feel free to leave them as issues in the repository. If you find a typo, create a pull request. The idea is to keep the content up to date and use github’s native feature to help tell the story with issues and PR’s, which are all searchable via google. Because odds are if you have a question, someone else does too!

If planning to produce documentation, use jsDoc syntax to document function names, description, params and returns. Use @namespace and @memberOf to match your app structure. Create an application root module whose role is to pull together all of the modules and features of your application. Refactor logic for making data operations and interacting with data to a factory. Make data services responsible for XHR calls, local storage, stashing in memory, or any other data operations. The following example defines the app module and its dependencies, defines a controller, and defines a factory all in the same file.

john papa angular 2 style guide

I’m also working on a Pluralsight course titled Angular 2 First Look due out in early March. Of course, I’ll be teaching the main concepts too. You signed in with another tab or window. There are multiple versions of Angular, and thus there are multiple versions of the guide. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.

Feel free to grab it, clone it, or fork it. Instructions on running it are in its readme. The Angular style guide by John Papa is considered the definite resource for Angular developers. John’s guide is based on his own personal experiences working in team environments, making presentations and building training courses about Angular. Open an issue first to discuss potential changes/additions.

Factories should have a single responsibility, that is encapsulated by its context. Once a factory begins to exceed that singular purpose, a new factory should be created. Define a controller for a view, and try not to reuse the controller for other views. Instead, move reusable logic to factories and keep the controller simple and focused on its view. Defer logic in a controller by delegating to services and factories.

Manually Identify Route Resolver Dependencies

Translations of this Angular style guide are maintained by the community and can be found here. Note that the names list and detail are arbitrary descriptive names for these components. There is no rule that says you have to use those. It could be HeroDetailComponent, HeroEditorComponent, or anything that is decriptive and consistent in our app. Many of my styles have been from the many pair programming sessions Ward Bell and I have had.

  • Use $inject to manually identify your dependencies for Angular components.
  • Use subtle animations with Angular to transition between states for views and primary visual elements.
  • For example, if the directive simply hides and shows, use ngHide/ngShow.

Connect and share knowledge within a single location that is structured and easy to search. Use Gulp or Grunt for creating automated tasks. Gulp leans to code over configuration while Grunt leans to configuration over code.

// Add user-identifying info so service gets the right credit limit for this user. Place bindable members at the top of the controller, alphabetized, and not spread through the controller code. Use named functions instead of passing an anonymous function in as a callback. When using a module, avoid using a variable and instead use chaining with the getter syntax.

Use an Options File

The previous version of this style guide, which can be found here. This guide is not intended to serve as a demo of reusable code, code snippets, or advanced solutions though it may drop a few here or there. Rather it is intended to be a starting point for a team looking for consistency. Demonstrates use of grunt and gulp with an angular app. The dev world is rich, fascinating and helpful. There’s reddit, discord, slack, github, gitter, irc etc etc etc etc.

john papa angular 2 style guide

Use file templates or snippets to help follow consistent styles and patterns. Here are templates and/or snippets for some of the web development editors and IDEs. Use JS Hint for linting your JavaScript and be sure to customize the JS Hint options file and include in source control. See the JS Hint docs for details on the options. Inject code into module configuration that must be configured before running the angular app.

Manually Identify Dependencies

I personally prefer Gulp as I feel it is easier to read and write, but both are excellent. Client-side routing is important for creating a navigation flow between views and composing views that are made of many smaller templates and directives. Note that yasnippet categorizes snippets by major mode, How the web works Learn web development MDN and there are several Emacs major modes for editing Javascript code. The snippets are in js2-mode, and the other directories contain only a dotfile to reference them there. Use consistent names for all directives using camelCase. Use a short prefix to describe the area that the directives belong .

I’m pretty new to Angular and I’d like to learn good practices from the beginning. I’ve come across three Angular style guides and they all seem to be great. I’d like to know which one would be best for me to adopt, but I’m in no position to be the judge on that, since I have little experience with big Angular apps. Use JSCS for checking your coding styles your JavaScript and be sure to customize the JSCS options file and include in source control. See the JSCS docs for details on the options.

It because approaches to working with the angular and Style Guides exist as much as there is the specialists. Define routes for views in the module where they exist. Each module should contain the routes for the views in the module. Use subtle animations with Angular to transition between states for views and primary visual elements.

While this guide explains the what, why and how, I find it helpful to see them in practice. This guide is accompanied by a sample application that follows these styles and patterns. You can find the sample application here in the modular folder.

Ideal candidates include providers and constants. Structure your app such that you can Locate your code quickly, Identify the code at a glance, keep the Flattest structure you can, and Try to stay DRY. The structure should follow these 4 basic guidelines. Use $inject to manually identify your dependencies for Angular components. Use controllerAs syntax with a directive to be consistent with using controller as with view and controller pairings.