Sop 4 javascript palindrome

 <!DOCTYPE html>


<html><head><title>Reverse the stringand check palindrome</title>


<script type="text/javascript">


function palindrome()


{


var str,str2,i,len;


str2="";


str=(f1.str1.value);


count=0;


len=str.length;


for(i=len-1;i>=0;i--)


{


str2=str2+str[i];


}


alert("Reverse String is ==>"+str2);


if(str == str2)


{ alert("String is palindrome");


}


else


{ alert("String is not palindrome"); }


} </script>


</head>


<body>


<form name="f1">


Enter any string: <input type="text" name="str1"><br>


<input type="button" value="Reverse String" onClick="palindrome()">


</form>


</body>


</html>

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