how to use localStorage in javascript code example

Example 1: javascript set local storage value

var testObject = { 'one': 1, 'two': 2, 'three': 3 };

// Put the object into storage
localStorage.setItem('testObject', JSON.stringify(testObject));

// Retrieve the object from storage
var retrievedObject = localStorage.getItem('testObject');

console.log('retrievedObject: ', JSON.parse(retrievedObject));

Example 2: 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 3: local storage javascript

function createItem() {
	localStorage.setItem('nameOfItem', 'value'); 
} 
createItem() // Creates a item named 'nameOfItem' and stores a value of 'value'

function getValue() {
	return localStorage.getItem('nameOfItem');  
} // Gets the value of 'nameOfItem' and returns it
console.log(getValue()); //'value';

Example 4: local storage javascript

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

Example 5: localStorage

// localStorage for objects, arrays or any data type
var obj = {
	firstName: "Bob",
    lastName: "Jeff",
    age: 13
}
localStorage.setItem("itemname", JSON.stringify(obj)); // Save the obj as string
var item = JSON.parse(localStorage.getItem("itemname")); 
// ^^ Parse string then set `item` as the obj

Example 6: javascript localstorage

localStorage.setItem("user_name", "Bob");

document.body.addEventListener("click", function(){
  alert(localStorage.getItem("user_name"))
});