Benchmark: camelize - MeasureThat.net

Script Preparation code:

function camelize(str, $ucfirst) {
    if ($ucfirst === void 0) { $ucfirst = false; }
    var $return = str.replace(/^([A-Z])|[\s-_]+(\w)/g, function (match, p1, p2) {
        return p2 ? p2.toUpperCase() : p1.toLowerCase();
    });
    return $ucfirst ? $return.charAt(0).toUpperCase() + $return.slice(1) : $return;
};

function toCamelCase(str) {
  let s =
    str &&
    str
      .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
      .map(x => x.slice(0, 1).toUpperCase() + x.slice(1).toLowerCase())
      .join('');
  return s.slice(0, 1).toLowerCase() + s.slice(1);
};

Tests:

camelize
camelize('some_database_field_name'); camelize('Some label that needs to be camelized'); camelize('some-javascript-property'); camelize('some-mixed_string with spaces_underscores-and-hyphens');
toCamelCase
toCamelCase('some_database_field_name'); toCamelCase('Some label that needs to be camelized'); toCamelCase('some-javascript-property'); toCamelCase('some-mixed_string with spaces_underscores-and-hyphens');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
camelize
toCamelCase

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: 17 days ago)

User agent: Mozilla/5.0 (Android 13; Mobile; rv:129.0) Gecko/129.0 Firefox/129.0

Browser/OS: Firefox Mobile 129 on Android

View result in a separate tab

Test name	Executions per second
camelize	484403.2 Ops/sec
toCamelCase	338634.9 Ops/sec

camelize (version: 0)

Comparing performance of: camelize vs toCamelCase

Created: 5 years ago by: Guest

Jump to the latest result

camelize

toCamelCase

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A