how to use pass localstorage in js code example

Example 1: javascript store object in local storage

var person = { "name": "billy", "age": 23};

localStorage.setItem('person', JSON.stringify(person)); //stringify object and store
var retrievedPerson = JSON.parse(localStorage.getItem('person')); //retrieve the object

Example 2: how to get data from localstorage in javascript

//localStorage is an object, so values are stored by key name
//data from localStorage is always stored in strings
//usually the values at each key are stringified objects in JSON format, therefore we must parse them
var data = JSON.parse(localStorage.getItem("key name"));//make sure the "key name" exists in the localStorage