5 tricks about AngularJS directives and tests - Ninja Squad. Vous cherchez la version en Français ?
C’est ici. If AngularJS has one tricky part, it is for sure how to write directives. Hopefully our book helped you for the first steps, but it’s hard to find good references on how to test directives. Angular is well designed around tests, with a mock system, dependency injection, simulated HTTP requests, pretty much everything you need. But directive tests are often sidelined in applications. An advanced directive will have a template, its own scope with specific values, and a set of behavioral functions. This directive displays the gravatar of a user (given an user parameter), with two possible sizes: 20px by default, or 40px if size parameter has lg value. A Guide To Transclusion in AngularJS. I've always had a problem with transclusion.
Though I've used it from time to time, using it always felt uncomfortable. I was never really sure what exactly the API was doing, or more importantly, what exactly I was supposed to do when using it. Based on what I've heard, I'm not alone in this. Transclusion is one of those things people often mention when they talk about their difficulties with Angular. What is it that makes this a difficult topic then? The API is tricky, with its higher-order functions and "magic arguments".Parts of the API are deprecated, and it can be hard to figure out which parts.The documentation uses lots of big words ("a transclude linking function pre-bound to the correct transclusion scope").There are actually two separate features provided by the same API: Regular transclusion and element transclusion. It wasn't until writing the transclusion chapter for my book that I felt I had fully grasped this topic.
The Basics: Including Content from Another Template. AngularJS Filters Dengan Tutlane. Variable templates for an AngularJS directive (Example) Sometimes web services and APIs return different data sets for the same type of object.
For example, the tumblr API will return a list of posts, but each post type has different data associated with it: text posts have a title and body, while photo posts have captions and images. Since having different components and directives for each post type doesn't make much sense (especially when they're all displayed in one stream, as on tumblr), it's beneficial to be able to conditionally load a template based on the post type of each individual post.
This code is based on these two articles/posts: and here is the tumblr API for reference: components.js news.html (all posts view) Creating custom AngularJS directives for beginners. Directives are one of the most important concepts to understand Angular.
This tutorial takes through the basics and beyond. Build custom directives with AngularJS. AngularJS Custom Directives. Mastering AngularJS Directives. A Practical Guide to AngularJS Directives - SitePoint. Directives are the most important components of any AngularJS application.
Although AngularJS ships with wide range of directives, you will often need to create application specific directives. This tutorial will give an overview of custom directives and explain how to use them in real world Angular projects. At the end of the tutorial, I will guide you through the creation of a simple note taking app with the help of Angular directives. Overview A directive is something that introduces new syntax. If you’ve written an Angular application before, then you have used directives, whether you realized it or not. The jQuery Perspective Just imagine how you create a date picker with jQuery.
AngularJS: Buat Element Dengan Directive. While working on one of the applications being developed on the AngularJS framework, I came across a situation where I had to add a reusable and independent functionality on a DOM element.
This could easily be done using JQuery. However, since the app was being developed using AngularJS, the best practice was to stick to that only, which was made easy with the AngularJS “Directive” tool. Directive is one of the most powerful tools of AngularJS, and it includes attributes such as ng-show, ng-include, and ng-bind. In addition to this, AngularJS allows developers to define custom directives that express the application specifications and requirements much more clearly and semantically than regular HTML elements. Buat Elemen dengan AngularJS Directive.
Creating Custom AngularJS Directives Series AngularJS provides many directives that can be used to manipulate the DOM, route events to event handler functions, perform data binding, associate controllers/scope with a view, plus much more.
Directives such as ng-click, ng-show/ng-hide, ng-repeat,and many others found in the AngularJS core script make it easy to get started using the framework. Although the built-in directives cover many different scenarios, there may be times when you find yourself needing custom directives and wondering how to get started writing them. In this series of posts I’ll provide a step-by-step look at how directives work and how you can get started using them. The overall goal is to move slowly and provide simple, digestible directive examples that get more and more involved as the series progresses. Dynamically add directives in AngularJS (while ditching jQuery) Let’s say you want to add a button that adds more buttons (or any other interactive element) that do something when you click them.
There is a few ways to achieve this, but most of the solutions I found either didn’t work (probably due to using an older AngularJS version), seemed unnecessarily complicated or relied on using jQuery. Here is what I came up with (for Angular 1.2.9). To see a working example with the full code, visit this page.