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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

var a = true,
    b;

Teardown JS

Test cases

Test #1

Title *

Async

Code *

if (a === true) {
  b = true;
} else {
  b = false;
}

if (a === false) {
  b = true;
} else {
  b = false;
}

Test #2

Title *

Async

Code *

b = (a === true) ? true : false;

b = (a === false) ? true : false;

Test #3

Title *

Async

Code *

if (a == true) {
  b = true;
} else {
  b = false;
}

if (a == false) {
  b = true;
} else {
  b = false;
}

Test #4

Title *

Async

Code *

b = (a == true) ? true : false;

b = (a == false) ? true : false;

Test #5

Title *

Async

Code *

if (a) {
  b = true;
} else {
  b = false;
}

if (!a) {
  b = true;
} else {
  b = false;
}

Test #6

Title *

Async

Code *

b = (a) ? true : false;
b = (!a) ? true : false;