localStorage.someid = 'somevalue';

//or

localStorage.setItem('someid', 'somevalue'); 

sessionStorage.someid = 'somevalue';

//or

sessionStorage.setItem('someid', 'somevalue');

//or

var value = localStorage.someid

var value = sessionStorage.getItem('someid');

//or

var value = sessionStorage.someid

sessionStorage.removeItem('someid');

sessionStorage.clear();

window.onload = function ()

{

    if (typeof (Storage) !== "undefined") {

        //your browser supports web storage.

        isWebStorageSupported = true;

    }

    else {

        //your browser doesn't support web storage.

        isWebStorageSupported = false;

    }

}

//and insert to local storage

function insertToLocalStorage(id, value) {

    if (isWebStorageSupported) {

        if (id != "" && value != "") {

            localStorage.setItem(id, value);

            alert("Saved on Local Storage");

        }

    }

}

//and insert to session storage

function insertToSessionStorage(id, value) {

    if (isWebStorageSupported) {

        if (id != "" && value != "") {

            sessionStorage.setItem(id, value);

            alert("Saved on Session Storage");

        }

    }

}

//show all items from local storage

function getAllFromLocalStorage() {

   if (isWebStorageSupported) {

       for (var i = 0, len = localStorage.length; i < len; i++) {

           var key = localStorage.key(i);

           var value = localStorage.getItem(key);

           alert(key + "=" + value);

       }

   }

}

//check whether the browser supports web storage and

//show all items from session storage

function getAllFromSessionStorage() {

   if (isWebStorageSupported) {

       for (var i = 0, len = sessionStorage.length; i < len; i++) {

           var key = sessionStorage.key(i);

           var value = sessionStorage.getItem(key);

           alert(key + "=" + value);

       }

   }

}

function clearStorage()

{

    if (isWebStorageSupported) {

        sessionStorage.clear();

        localStorage.clear();

        alert("Local and Session Storage Cleared.")

    }

}