Benchmark: charAt vs substr vs substring vs slice test

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);

Rendered benchmark preparation results:

Previous results

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Related benchmarks:

charAt vs substr vs substring vs slice test (version: 2)