Benchmark: random contrast - MeasureThat.net

Script Preparation code:

// Using Math.random and Base 36:
console.log(Math.random().toString(36).slice(-5));

// Using new Date and Base 36:
console.log((+new Date).toString(36).slice(-5));

// Using Math.random and Base 64 (btoa):
console.log(btoa(Math.random()).slice(0, 5));

// Using new Date and Base 64 (btoa):
console.log(btoa(+new Date).slice(-7, -2));
console.log(btoa(+new Date).substr(-7, 5));

Tests:

Math.random().toString(36).slice(-5)
Math.random().toString(36).slice(-5)
(+new Date).toString(36).slice(-5)
(+new Date).toString(36).slice(-5)
btoa(Math.random()).slice(0, 5)
btoa(Math.random()).slice(0, 5)
btoa(+new Date).slice(-7, -2)
btoa(+new Date).slice(-7, -2)
btoa(+new Date).substr(-7, 5)
btoa(+new Date).substr(-7, 5)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Math.random().toString(36).slice(-5)
(+new Date).toString(36).slice(-5)
btoa(Math.random()).slice(0, 5)
btoa(+new Date).slice(-7, -2)
btoa(+new Date).substr(-7, 5)

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Browser/OS: Chrome 93 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Math.random().toString(36).slice(-5)	3315275.0 Ops/sec
(+new Date).toString(36).slice(-5)	1857315.0 Ops/sec
btoa(Math.random()).slice(0, 5)	1069847.0 Ops/sec
btoa(+new Date).slice(-7, -2)	2213181.0 Ops/sec
btoa(+new Date).substr(-7, 5)	2247551.0 Ops/sec

random contrast (version: 0)

Comparing performance of: Math.random().toString(36).slice(-5) vs (+new Date).toString(36).slice(-5) vs btoa(Math.random()).slice(0, 5) vs btoa(+new Date).slice(-7, -2) vs btoa(+new Date).substr(-7, 5)

Created: 2 years ago by: Registered User

Jump to the latest result

Math.random().toString(36).slice(-5)

(+new Date).toString(36).slice(-5)

btoa(Math.random()).slice(0, 5)

btoa(+new Date).slice(-7, -2)

btoa(+new Date).substr(-7, 5)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A