Run results for: pop() vs shift() vs unshift vs pop #2 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/109.0

Browser: Firefox 109

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
pop	79977630.0 Ops/sec
shift	529365200.0 Ops/sec
unshift	70.7 Ops/sec
push	57.1 Ops/sec

Website performance monitoring

Script Preparation code:

var array = [];

for(var i = 0; i < 100000; i++){array.push(Math.random());}

Tests:

pop
while (array.length > 0) { array.pop(); }
shift
while (array.length > 0) { array.shift(); }
unshift
let a = []; for(var i = 0; i < 100000; ++i) { a.unshift(i); }
push
let a = new Array(100000); for(var i = 0; i < 100000; ++i) { a.push(i); }