The procedure to extract information from a JSON file stored locally in an Angular Ionic application is as follows:
- Create a new service named "JsonService" using the following command:
ionic g service json
- Open the "json.service.ts" file and import the HttpClient module.
import { HttpClient } from '@angular/common/http';
- Add the following code to the constructor of the "JsonService" class to inject the HttpClient module.
constructor(private http: HttpClient) { }
- Create a new method named "getJsonData" in the "JsonService" class to fetch the JSON data from the local file.
getJsonData() {
return this.http.get('assets/data/json-data.json');
}
- Open the component where you want to use the JSON data and inject the "JsonService" using the following code:
constructor(private jsonService: JsonService) { }
- Call the "getJsonData" method of the "JsonService" using the following code to get the JSON data.
this.jsonService.getJsonData().subscribe((data) => {
console.log(data);
});
- You can access the JSON data returned by the "getJsonData" method using the "data" variable in the above code.