<html> <head> <script language="javascript"> <!-- var a; var b; a = prompt("Input your name"); b = prompt("Input your lastname"); alert("สวัสดี" +a+b); </script> </head> </html>
<html> <head> <script language="javascript"> <!-- var a; var b; a = prompt("Input your widht"); b = prompt("Input your height"); alert("พท.สี่เหลี่ยมผืนผ้า" +a*b); </script> </head> </html>