document.cookie = 'ppkcookie1=testcookie; expires=Thu, 2 Aug 2001 20:47:11 UTC; path=/'

document.cookie = 'ppkcookie2=another test; expires=Fri, 3 Aug 2001 20:47:11 UTC; path=/'

var cookieEnabled = (function() {
	var id = new Date().getTime();
	
	document.cookie = 'cookieprobe=' + id + ' ;path=/';
	
	return (document.cookie.indexOf(id) != -1);
})();

속성
unsigned int length

메소드 
DOMString  key(unsigned int index)
any getItem(DOMString  key)
void setItem(DOMString key, data)
void removeItem(DOMString  key)
void clear()

sessionStorage.setItem(‘twitter’, ‘@rem’);
sessionStorage.twitter = ‘@rem’;

sessionStorage.getItem(‘cost’);
sessionStorage.twitter

for (var i = 0; i < sessionStorage.length; i++) {
	alert(sessionStorage.key(i) + ‘=’ + sessionStorage.getItem(sessionStorage.key(i)));
}

function stringify() {
	var videoDetails = {
		author: '감우성',
		description: '무법자',
		rating: '5.51'
 	};
 
		
 	sessionStorage.setItem('videoDetails', JSON.stringify(videoDetails));
}

function parse() {
	var videoDetails = JSON.parse(sessionStorage.getItem('videoDetails') || 'null');
	alert(videoDetails.author + "\n" + videoDetails.description + "\n" +  videoDetails.rating);
}

var db; 
if (window.openDatabase) {
	db = openDatabase(‘mydb’, ‘1.0’, ‘My first database’, 2 * 1024 * 1024);
}

db.transaction(
    function(tx) {
  tx.executeSql(sql, [], function () {
  // 실행코드
  }); 
  },
  function(tx, error) { 
      alert(‘에러: ‘ + error.message);   
  }
});