Benchmark: isNumber: regex vs isNaN vs string comparison (version: 1) vs parseInt 2

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

window.case1 = new Proxy({}, {
    get(t, p, r) {
        if (typeof p === 'string' && !isNaN(p)) {
            return +p
        } else {
            return Reflect.get(t, p, r)
        }
    }
});
window.case2 = new Proxy({}, {
    get(t, p, r) {
        if (/^\d+$/.test(p)) {
            return +p
        } else {
            return Reflect.get(t, p, r)
        }
    }
});
window.case3 = new Proxy({}, {
    get(t, p, r) {
        if (p >= '0' && p <= '9') {
            return +p
        } else {
            return Reflect.get(t, p, r)
        }
    }
});
window.case4 = new Proxy({}, {
    get(t, p, r) {
        try {
            Number.parseInt(p);
            return +p
        } catch (_) {
            return Reflect.get(t, p, r)
        }
    }
});
window.gabage1 = 0;
window.gabage2 = 0;
window.gabage3 = 0;
window.gabage4 = 0;

Tests:

isNaN
gabage1 =+ case1[_.random(0, 1e3, false)];
regex
gabage2 =+ case2[_.random(0, 1e3, false)];
string comparison
gabage3 =+ case3[_.random(0, 1e3, false)];
Number.parseInt
gabage4 =+ case4[_.random(0, 1e3, false)];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isNaN
regex
string comparison
Number.parseInt

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36

Browser/OS: Chrome 106 on Windows

View result in a separate tab

Test name	Executions per second
isNaN	2526442.0 Ops/sec
regex	2810166.0 Ops/sec
string comparison	2885970.0 Ops/sec
Number.parseInt	2597095.0 Ops/sec

isNumber: regex vs isNaN vs string comparison (version: 1) vs parseInt 2 (version: 0)

another attempt

Comparing performance of: isNaN vs regex vs string comparison vs Number.parseInt

Created: 2 years ago by: Guest

Jump to the latest result

isNaN

regex

string comparison

Number.parseInt

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A