<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<input type="number" onchange="f1()"/>
<div id="ans"></div>
<script>
function f1()
{
var v=event.target.value;
if(v>999 || v<0)
{
alert("Invalid number(range is 0-999)");
}
else
{
var ans="";
//const strRev = [...v].reverse().join("");
const strRev=v;
for(var i=0;i<strRev.length;i++)
{
var d=strRev.charAt(i);
//alert(d);
switch(d)
{
case "1":
ans+="ONE ";
break;
case "2":
ans+="TWO ";
break;
case "3":
ans+="THREE ";
break;
case "4":
ans="FOUR ";
break;
case "5":
ans="Five ";
break;
case "6":
ans="SIX ";
break;
case "7":
ans="SEVEN ";
break;
case "8":
ans="EIGHT ";
break;
case "9":
ans="NINE ";
break;
case "0":
ans="ZERO ";
break;
}
}
document.getElementById("ans").innerHTML=ans;
}
}
</script>
</body>
</html>
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