Angular 2 TypeScript how to find element in Array

Source: https://stackoverflow.com/questions/37969984/angular-2-typescript-how-to-find-element-in-array

You need to use method Array.filter:

this.persons =  this.personService.getPersons().filter(x => x.id == this.personId)[0];

or Array.find

this.persons =  this.personService.getPersons().find(x => x.id == this.personId);