Infinity is a JavaScript keyword that represents positive infinity.
<html> <body> <script language = "JavaScript"> <!-- function checkNum(){ input=document.form1.num.value; if(input < Infinity){ alert("Your number is less than Infinity"); } else if(input > Infinity){ alert("Your number is greater than Infinity"); }else if(input == Infinity){ alert("Your number if equal to Infinity"); }else{ alert("do not know how to compare"); } } --> </script> <form name="form1"> Enter a number to compare against Infinity. <br><br> <input type="text" size="35" name="num"> <br><br> <input type="button" value="Check Number" onClick='checkNum()'> </form> </script> </body> </html>
