Run results for: Filter + join vs while + str

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

case 2

1.2M/s

case 1

1.1M/s

View exact numbers

Test name	Executions per second
✓ case 2	1,189,314 Ops/sec
case 1	1,121,651 Ops/sec

Script Preparation code:

var arr = ['text', 'text', false && 'text', true && 'text', 'text', undefined, null, 'last str'];
var repeats = 10000;

var cnF = (...args) => {
    return args.filter(cls => (
        cls !== undefined && cls !== null && cls !== false
    )).join(' ')
};

var cnW = (...args) => {
    var i = 0
    var str = ''
    while (i < args.length) {
        var cls = args[i]
        if (cls !== undefined && cls !== null && cls !== false) {
            if (str.length > 0) str += ' '
            str += cls
        }
        i++
    }
    return str
};

Tests:

case 1
cnF(arr)
case 2
cnW(arr)