How to build components in Angular? 3 methods introduced

How to build components in Angular? This article will introduce you to Angular methods to create projects and three ways to create components in Angular.

#1. What is the difference between angular and angularjs?

• Naming changes, Angular2 and later will be officially named Angular, and versions before 2.0 are called AngualrJS. [Related tutorial recommendation: "angular tutorial"]

• 1.x is used by introducing the js file of AngularJS to the web page. After 2.0, it is completely different. The difference between the two is similar to Java and JavaScript.

2. Create a project

1. Install the global Angular CLI command line tool

npm install -g @angular/cli

2. Create a project

ng new angular-tour-of-heroes

Note: The node version needs to be above 12, otherwise it will prompt: "'ng' is not an internal or external command, nor is it an operable program or batch file. ”

3. Run the project

cd angular-tour-of-heroes
ng serve --open

3. The first way to create components:

# Create a new file under the ##1.src file and name it hello-world.component.ts

import { Component } from "@angular/core";

@Component({
    selector: 'hello-world组件',
    // templateUrl: './app.component.html',
    // styleUrls: ["./app.component.scss"]
    template: `<h1>{{text}}</h1>`

})
export class HellowordComponent {
    constructor() {}
    text = "第一个模板";
}

2.app.component.html or Add component tag

##

// 引入ng核心包和组件
import { Component } from '@angular/core';
@Component({
  selector: 'app-root',//当前组件的引用名称
  template:
    ` 
 <hello-world></hello-world>//x新增组件标签

    `  ,
  // templateUrl: &#39;./app.component.html&#39;,//组件模板
  styles: [&#39;h1 { color:red}&#39;]
  // styleUrls: [&#39;./app.component.scss&#39;]//组件的样式文件

})
export class AppComponent {//组件名称

}

in app.component.ts 3. Introduce the component into app.module.ts and declare the component

4. The second way to create components:

Use cli to create components

Input command:

ng generate component hello-world

##5. The third way to create components:

1. Download in vscode Angular Files

##2. Right click under components, and the following picture will appear

3. Click Generater component and enter the component name and press Enter

##4. Component generation

For more programming-related knowledge, please visit:

Introduction to Programming

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