Javascript/pali.html at main · azarcoder/Javascript · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>Palindrome checking</h1>
    <input type="text" id="txt">
    <button onclick="pali()">Answer</button>
    <p id="para"></p>
    <script>
        function pali()
        {
            let txt=document.getElementById('txt').value.toLocaleLowerCase()
            let ans=document.getElementById('para')
            ans.innerHTML=''
            var s="",t=""
            for(var i in txt)
                s+=txt[i]
            for(var i=s.length-1;i>=0;i--)
                t+=s[i]

            if(txt==t.toLowerCase())
            {
            ans.innerHTML='YES'
            ans.style.border='2px solid blue'
            }
            else
            {
            ans.innerHTML="NO"
            ans.style.border='2px solid red'
            }
        }
    </script>
</body>
</html>