HTML Tutorials

NUMBER ONE
http://www.w3schools.com/js/tryit.asp?filename=tryjs_ifthen

JavaScript
If Statement

NUMBER TWO
http://www.w3schools.com/js/tryit.asp?filename=tryjs_alert 

Javascript
Alert Box 


NUMBER THREE
http://www.w3schools.com/js/tryit.asp?filename=tryjs_cookie_username 
 
JavaScript
Welcome Cookie

NUMBER FOUR
http://www.w3schools.com/js/tryit.asp?filename=tryjs_timing_clock

JavaScript
Clock