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jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

Test case details

Title *

Description
(Markdown syntax is allowed)

Preparation Code

Preparation HTML
(this will be inserted in the <body> of a valid HTML5 document in standards mode)
(useful when testing DOM operations or including libraries)

Setup JS

a= [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
    a2 = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
    o= {"a":1, "b":2, "c":3, "d":4, "e":5, "f": 6, "g": 7, "h":8, "i":9, "j": 10};
    o2= {"1":1, "2":2, "3":3, "4":4, "5":5, "6":6, "7":7, "8":8, "9":9, "10":10};

Teardown JS

Test cases

Test #1

Title *

Async

Code *

a[3] = 15;
a[4] = 15;
a[6] = 15;
a[9] = 15;

Test #2

Title *

Async

Code *

o.d = 15;
o.e = 15;
o.g = 15;
o.i = 15;

Test #3

Title *

Async

Code *

o["d"] = 15;
o["e"] = 15;
o["g"] = 15;
o["i"] = 15;

Test #4

Title *

Async

Code *

o2["3"] = 15;
o2["4"] = 15;
o2["6"] = 15;
o2["9"] = 15;

Test #5

Title *

Async

Code *

a2[3] = 15;
a2[4] = 15;
a2[6] = 15;
a2[9] = 15;