Angular 2 – Two Ways to Initialize Component Properties

1
This article represents two different ways in which Angular 2 components properties can be initialized. Please feel free to comment/suggest if I missed to mention one or more important points. Also, sorry for the typos.
Following are two different ways to initialize the component properties.

  • In the example below, component’s property is initialize through variable assignment. Take a look at the code “name = ‘Calvin Hobbes'”. This approach is sometimes preferable because it makes code easy to read and also, there will be lesser code to write.
    import {Component, View} from 'angular2/core';
    
    @Component({
      selector: 'user'
    })
    @View({
      template: '{{name}}'
    })
    export class UserComponent {
      name = 'Calvin Hobbes';
    }
    
  • In the code below, the property is first declared and then initialized inside the constructor.
    import {Component, View} from 'angular2/core';
    
    @Component({
      selector: 'user'
    })
    @View({
      template: '{{name}}'
    })
    export class UserComponent {
      name: string;
    
      constructor() {
        this.name = 'Calvin Hobbes';
      }
    }
    

 

Ajitesh Kumar

Ajitesh Kumar

Ajitesh is passionate about various different technologies including programming languages such as Java/JEE, Javascript, PHP, .NET, C/C++, mobile programming languages etc and, computing fundamentals such as application security, cloud computing, API, mobile apps, google glass, big data etc.Recently, he has been digging deep into the field of data science and machine learning.

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1 Comment

  1. nice blog too informative. looking and reading your points its so impressive. doing more blog like this. i really appreciated doing like this.

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