ReactJS-Interview-Questions/javascriptArray_05.html at main · shilpa-maity/ReactJS-Interview-Questions · GitHub

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<!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>
      <script type="text/javascript">
           //var user = {"id":1001,"name":"Apu","e-mail":"apu@yahoo.com"};
           //fetch all keys from the array.
           //fetch all values from the array.
           //how to fetch all keys froma  single object.
           //console.log("detecting all keys");
           //for(let a of  Object.keys(user)){
                  //console.log(a);
             //}
             //console.log("displaying values");
             //for(let a of  Object.values(user)){
                  //console.log(a);
             //}


             //1.WAP check a String whether it is Palindrome or Not.
              var str = "madam";
              var isPalindrome = true;
                 for(let i = 0; i < str.length / 2; i++){
                      if(str[i] !== str[str.length - 1 - i]){
                           isPalindrome = false;
                           break;
                      }
                 }
                     if(isPalindrome){
                         console.log(str + " is a Palindrome.");
                     } else {
                         console.log(str + " is not a Palindrome.");
                     }
          //2.WAP calculate length of the string without using length property.
          var str = "Hello World";
          var count = 0;
          for(let i = 0; str[i] !== undefined; i++){
               count++;
          }
          console.log("Length of the string is: " + count);
          //3.Suppose user has entered a string Apu Garain
          //Output should be Hello A.Garain
          //user has entered Shilpa Maity
          //Hello S.Maity


      </script>
</body>
</html>