随笔分类 - Angular
摘要：ElementRef: In Angular2 Doc, it suggest to "avoid" using ElementRef. It access DOM directly, can easily be attacked. If we log out the ElementRef, we
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摘要：You have complete control over the elements you nest inside of your component instance by using selectors to access and rearrange them. Selecting allo
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摘要：You can place content inside of the instance of your component element then manage it inside of the component’s template using ng-content. This proces
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摘要：Each Angular 2 Component can have its own styles which will remained contained inside the component. These isolated styles allow you to add whichever
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摘要：Both Smart Components and Presentation Components receive data from Services in entirely different ways. Smart Components use constructor injection to
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摘要：Services are used to share data between components. They follow a module pattern that allows you to use the data throughout your application so that y
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摘要：In this lesson we will learn several ways to debug an Angular 2 application, including by using Augury and the console. This is especially useful in s
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摘要：Components that you use across multiple applications need to follow a module pattern that keeps them separate from your application logic. This will a
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摘要：The application structure: in app.module.ts: components/home/home.module.ts:
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摘要：First, how to use a build in pipe: Then how to create a custom pipe: Notice here, we use: The reason doing this is because sort() is mutate opreation,
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摘要：When using provider string tokens, there’s a chance they collide with other third-party tokens. Angular has with the concept of opaque tokens, that al
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摘要：Dependecies aren’t always objects created by classes or factory functions. Sometimes, all we really want is inject a simple value, which can be a prim
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摘要：In order to resolve a dependency, Angular’s DI uses type annotations. To make sure these types are preserved when transpiled to ES5, TypeScript emits
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摘要：This lesson discusses when and how to add dependencies, resolved by Angular’s DI, to factory providers. The example used in this lesson builts upon th
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摘要：In this lesson, we discuss how and when to use factory providers, to enable dependencies that shouldn’t be available to Angular’s DI. If you have this
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摘要：In this lesson, we’re going to take a look at how add a class to the providers property of a component creates an actual providers. We’ll learn what a
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摘要：In previous artical, we introduce the how to use *ngFor. The limitation for previous solution to display all the heros is we hard cord all heros in ou
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摘要：heros.ts: here we can also use: heroes.component.css:
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摘要：First, What is directive, what is the difference between component and directive. For my understanding, component is something like 'canvas', 'form',
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摘要：The application is simple, to build a color picker: When click the rect box, it will check the color value below and title color will also change. col
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