Javascript Palindromes (v3)

Revision 3 of this benchmark created by Justine Philip on January 10, 2019

Setup

var sampleText = "tattarrattat"
  
  function palindromeIntuitive(text) {
  var reversedText  = text.toLowerCase()
                      .split('').reverse().join('');
  
  
  return text === reversedText;
  }
  
  
  function palindromeLoop(text) {
      let charArray = text.toLowerCase().split('')
      
      let result = charArray.every((letter, index) => {
          return letter === charArray[charArray.length - index - 1];
      })
      
      return result
  }
  
  function palindromeLoopFix(text) {
   var textLen = text.length;
   for (var i = 0; i < textLen/2; i++) {
     if (text[i] !== text[textLen - 1 - i]) {
         return false;
     }
   }
   return true;
  }

Test runner

palindromeLoop(sampleText)

palindromeLoopFix(sampleText)

palindromeIntuitive(sampleText)

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 3: published by Justine Philip on January 10, 2019