how to set data from localstorage in javascript code example

Example 1: local storage javascript

localStorage.setItem('user_name', 'Rohit'); //store a key/value
var retrievedUsername = localStorage.getItem('user_name'); //retrieve the key

Example 2: javascript save data to local storage

// Store
localStorage.lastname = "Smith";
// Retrieve
document.getElementById("result").innerHTML = localStorage.lastname;
// Remove
localStorage.removeItem("lastname");