Describe briefly how to create a service with get and post requests.

1.	Describe briefly how to create a service with get and post requests.
Answer» Generate a service first using ionic generate service command. Import HTTPCLIENT from @angular/common/http library. Then add HttpClient to constructor so it can be USED in the service. A typical get and post request can be written as follows : get(ENDPOINT: string, params?: any, options?: RequestOptions) { if (!options) { options = NEW RequestOptions(); } if (params) { let p = new URLSearchParams(); for (let K in params) { p.set(k, params[k]); } options.search = !options.search && p \|\| options.search; } return this.http.get(this.url + '/' + endpoint, options); } post(endpoint: string, body: any, options?: RequestOptions) { options = new RequestOptions(); options.headers = this.createHeaders(); return this.http.post(this.url + '/' + endpoint, body, options); }

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