Question:
Write a javascript function to check whether a word or a sentence is palindrome or not irrespective of case and spaces. Name the HTML file as palin.html.
Give appropriate alerts on click of a button name is “palinbtn”. Also provide a text box named “palin” which accepts the word / sentence. The screen should be as shown in the snapshot
Examples:
- LiRiL – The entry is a palindrome.
- Apple – The entry is not a palindrome.
- Was it a cat I saw – The entry is a palindrome.
Note : Remove all white spaces from the input given and check for palindrome for the same input ignoring case.
Code:
palin.html
<html>
<head>
<script>
function palindrome()
{
var str=document.getElementById("palin").value;
var str=str.replace(/\s/g,"").toLowerCase();
var input=str.split("");
var output=input.reverse().join("");
if(str==output) alert("The entry is a palindrome.");
else alert("The entry is not a palindrome.");
}
</script>
</head>
<body>
<form>
Enter word/sentence to check for palindrome : <input type="text" name="palin" id="palin"><br>
<input type="button" name="palinbtn" value="Check Palindrome" onclick="palindrome()">
</form>
</body>
</html>