HTML5: Attack and Secure

EXAMPLE Example Of Localstorage <ul id=”present_textarea” contenteditable=”true”> <li>Test1</li> </ul> <input type=”button” id=”clearall” value=”clear Storage” > <script type=”text/javascript”> document.addEventListener(“DOMContentLoaded”, function() { console.log(“Onload fired via DOMContent Loaded”); if (localStorage.getItem(“text”)){ console.log(“text found”); document.getElementById(“present_textarea”).innerHTML = localStorage.getItem(“text”); }}); var textarea=document.getElementById(“present_textarea”); var clearall=document.getElementById(“clearall”); clearall.onclick=function(){ console.log(“onclick”); localStorage.clear(); }; textarea.onblur=function(){ console.log(“onblur”); localStorage.setItem(“text”,document.getElementById(“present_textarea”).innerHTML); }; </script>