Prime no. In JavaScript

Write a program to accept a no. from user and print whether it is prime or not.

Enter A Number:
<HEAD><title>Prime no. In JavaScript</title>
function chkprime()  
  {     var div  
       var no=parseInt(frm.t1.value)  
         alert(no + " is Prime number")
       alert(no + " Not Prime number") 
<form name=frm> Enter A Number:<input type=text name=t1 />
<input type='button' value='Is Prime?' onclick="chkprime();">


  1. Prime numbers are a special kind of natural numbers or positive integers which are exactly
    divisible by 1 and the number itself or such as 2,3,5,7 and 11.

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