HTML CSS JAVASCRIPT SQL PYTHON PHP BOOTSTRAP HOW TO W3.CSS JQUERY JAVA MORE REFERENCES

JS Tutorial

JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Events JS Strings JS String Methods JS Numbers JS Number Methods JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS Conditions JS Switch JS Loop For JS Loop While JS Break JS Type Conversion JS Bitwise JS RegExp JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Let JS Const JS Arrow Function JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words JS Versions JS Version ES5 JS Version ES6 JS JSON

JS Forms

JS Forms Forms API

JS Objects

Object Definitions Object Properties Object Methods Object Display Object Accessors Object Constructors Object Prototypes Object ECMAScript 5 Object Classes

JS Functions

Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Closures

JS HTML DOM

DOM Intro DOM Methods DOM Document DOM Elements DOM HTML DOM CSS DOM Animations DOM Events DOM Event Listener DOM Navigation DOM Nodes DOM Collections DOM Node Lists

JS Browser BOM

JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies

JS AJAX

AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples

JS JSON

JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON PHP JSON HTML JSON JSONP

JS Web APIs

Web API Intro Web History API Web Storage API Web Geolocation API

JS vs jQuery

jQuery Selectors jQuery HTML jQuery CSS jQuery DOM

JS Examples

JS Examples JS HTML DOM JS HTML Input JS HTML Objects JS HTML Events JS Browser JS Editor

JS References

JavaScript Objects HTML DOM Objects


Web Storage API

❮ Previous Next ❯

The Web Storage API is a simple syntax for storing and retrieving data in the browser. It is very easy to use:

Example

localStorage.setItem("name", "John Doe");
localStorage.getItem("name");
Try it Yourself »

The Web Storage API is supported in all browsers:

Yes Yes Yes Yes Yes

The localStorage Object

The localStorage object provides access to a local storage for a particular Web Site. It allows you to store, read, add, modify, and delete data items for that domain.

The data is stored with no expiration date, and will not be deleted when the browser is closed.

The data will be available for days, weeks, and years.

The setItem() Method

The localStorage.setItem() method stores a data item in a storage.

It takes a name and a value as parameters:

Example

localStorage.setItem("name", "John Doe");

The getItem() Method

The localStorage.getItem() method retrieves a data item from the storage.

It takes a name as parameter:

Example

localStorage.getItem("name");

The sessionStorage Object

The sessionStorage object is identical to the localStorage object.

The difference is that the sessionStorage object stores data for one session.

The data is deleted when the browser is closed.

Example

sessionStorage.getItem("name");
Try it Yourself »

The setItem() Method

The sessionStorage.setItem() method stores a data item in a storage.

It takes a name and a value as parameters:

Example

sessionStorage.setItem("name", "John Doe");

The getItem() Method

The sessionStorage.getItem() method retrieves a data item from the storage.

It takes a name as parameter:

Example

sessionStorage.getItem("name");

Storage Object Properties and Methods

Property/Method Description
key(n) Returns the name of the nth key in the storage
length Returns the number of data items stored in the Storage object
getItem(keyname) Returns the value of the specified key name
setItem(keyname, value) Adds that key to the storage, or update that key's value if it already exists
removeItem(keyname) Removes that key from the storage
clear() Empty all key out of the storage

Related Pages for Web Storage API

Property Description
window.localStorage Allows to save key/value pairs in a web browser. Stores the data with no expiration date
window.sessionStorage Allows to save key/value pairs in a web browser. Stores the data for one session

❮ Previous Next ❯