Run results for: charAt vs substr vs substring vs slice test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:97.0) Gecko/20100101 Firefox/97.0

Browser: Firefox 97

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Script Preparation code:

var str = "The quick brown fox jumps over the lazy dog";

Tests:

charAt
let first_char_charAt = str.charAt(0); let second_char_charAt = str.charAt(1); let last_char_charAt = str.charAt(str.length-1);
substr
let first_char_substr = str.substr(0, 1); let second_char_substr = str.substr(1, 1); let last_char_substr = str.substr(str.length-1, 1);
substring
let first_char_substring = str.substring(0, 1); let second_char_substring = str.substring(1, 2); let last_char_substring = str.substring(str.length-1, str.length);
slice
let first_char_slice = str.slice(0, 1); let second_char_slice = str.slice(1, 2); let last_char_slice = str.slice(str.length-1, str.length);