Угловое локальное хранение
localStorage.setItem('dataSource', this.dataSource.length); // setting
console.log(localStorage.getItem('dataSource')); // getting
Ankur
localStorage.setItem('dataSource', this.dataSource.length); // setting
console.log(localStorage.getItem('dataSource')); // gettinglet data = {"Name","Naveed"}
var show = localStorage.setItem("dataSource",data);
console.log(show);