Answer: HTML5 offers two new objects for storing data on the client:
LocalStorage - stores data with no time limit
<script type="text/javascript">
localStorage.lastname="Smith";
document.write(localStorage.lastname);
</script>
SessionStorage - stores data for one session.The data is deleted when the user closes the browser window.
<script type="text/javascript">
sessionStorage.lastname="Smith";
document.write(sessionStorage.lastname);
</script>
details on W3schools :
http://www.w3schools.com/html5/default.asp
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