angular httpclient implements HTTP client functions

This time I will bring you angular httpclient to implement the HTTP client function. What are theprecautionsfor angular httpclient to implement the HTTP client function. The following is a practical case, let's take a look.

Modern browsers support using two different APIs to make HTTP requests: XMLHttpRequestInterfaceand the fetch() API.

The HttpClient class in @angular/common/http provides a simplified API for Angular applications to implement HTTP client functionality.

1.Preparation

First import HttpClientModule in app.module.ts. As follows:

import { HttpClientModule } from '@angular/common/http'; @NgModule({ imports: [ HttpClientModule, ] }) export class AppModule {}

2. Introduce HttpClient into service.ts that requiresto referenceHttpClient, as follows:

import { HttpClient } from '@angular/common/http'; export class ConfigService { constructor(private http: HttpClient) { } }

##3. Request data

return this.http.get/post(url:'请求地址' , options: { headers: this.headers }) .toPromise() .then((data: any) => { return data; }) .catch((err) => { console.log(err); }); }

4. Introduce service into the corresponding component.ts file

##Data format:

{ "lists":[ {"title":"","pic":""}, {"title":"","pic":""} ] }

5. Call on the page

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to the php Chinese website Other related articles!

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