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);
Assume I have below array:
Skins[ {Id: 1, Name: "oily skin"}, {Id: 2, Name: "dry skin"}];If we want to get item with Id = 1 and Name = "oily skin", We'll try as below:
var skinName = skins.find(x=>x.Id == "1").Name;The result will return the skinName is "Oily skin".
You could combine .find with arrow functions and destructuring. Take this example from MDN.
const inventory = [ {name: 'apples', quantity: 2}, {name: 'bananas', quantity: 0}, {name: 'cherries', quantity: 5}];const result = inventory.find( ({ name }) => name === 'cherries' );console.log(result) // { name: 'cherries', quantity: 5 }