prime_number.js

<script>  
var a=prompt("enter a value");  
var count=0;  
  
 for(var i=2;i<a;i++)  
  {  
   if(a%i==0)  
   {  
    count=i;  
   }  
  }  
  if(count==0)  
  {  
   alert("given no is prime");  
  }  
  else  
  {  
   alert("given no is not a prime");  
  }  
</script>