Run results for: aaa vs bbb

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.192 Safari/537.36

Browser: Chrome 88

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
A	1381.5 Ops/sec
B	9186.8 Ops/sec

Tests:

A
function isPalindrome(word) { word = word.toString().toLowerCase().replace(/[\W_]/g, ''); const array_copy = word.split(''); const reversed_array = array_copy.reverse(); return word === reversed_array.join(''); } for(i=0; i<1000; i++){ isPalindrome('omississimo'); }
B
function isPalindrome(word) { word = word.toString().toLowerCase().replace(/[\W_]/g, ''); let left = 0; let right = word.length - 1; while(left < right) { if (word[left] !== word[right]) { return false; } left++; right--; } return true } for(i=0; i<1000; i++){ isPalindrome('omississimo'); }