Pangram.html

<!DOCTYPE html>
<html>
<head>

<title>PANGRAM</title>
<script type="text/javascript">
function check()
{
 var str_check=document.getElementById("str").value.toUpperCase().split("");
 var flag=true;
 
 for(var a=65;a<91;a++)
 {
 
	if(flag==false)
	{
	alert("your String is not pangram");
	break;
	}
   var lttr=String.fromCharCode(a);
		for(var i=0;i<str_check.length;i++)
			{
				if(lttr==str_check[i])
				{
				flag=true;
				break;
				}
				else
				{
				flag=false;
				}
				
			}
   
   
 }
 
 if(flag==true)
 {
 
 alert("your string is pangram");
 }
}



</script>
</head>
<body>
ENTER YOUR STRING:<input type="text" id="str"/>
<input type="button" onclick="check()" value="check"/>

</body>
</html>