Run results for: Sorting array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0

Browser: Firefox 114

Operating system: Windows

Device Platform: Desktop

Date tested: 11 months ago

Test name	Executions per second
Cut and move slices with .slice()	68999.9 Ops/sec
Mutate with .splice()	21817.4 Ops/sec

Tests:

Cut and move slices with .slice()
const array1 = ["a","b","c","x","d"]; const array2 = ["a","b","c","d","x"]; const array3 = ["a","x","b","c","d","e"]; const array4 = ["x","a","b","c","d","e"]; function reorderArray(array,itemIndex,newPosition) { const toFront = itemIndex > newPosition ? true : false; const a = toFront ? array.slice(0,newPosition) : array.slice(0,itemIndex); const b = toFront ? array.slice(newPosition,itemIndex) : array.slice(itemIndex,itemIndex+1); const c = toFront ? array.slice(itemIndex,itemIndex+1) : array.slice(itemIndex+1,newPosition+1); const d = toFront ? array.slice(itemIndex+1) : array.slice(newPosition+1); return [].concat(a, c, b, d); } const a = reorderArray(array1,3,1); const b = reorderArray(array2,4,0); const c = reorderArray(array3,1,3); const d = reorderArray(array4,0,1); const e = reorderArray(array4,0,0); console.log(a,b,c,d,e);
Mutate with .splice()
const array1 = ["a","b","c","x","d"]; const array2 = ["a","b","c","d","x"]; const array3 = ["a","x","b","c","d","e"]; const array4 = ["x","a","b","c","d","e"]; function arraymove(arr, fromIndex, toIndex) { const element = arr[fromIndex]; arr.splice(fromIndex, 1); arr.splice(toIndex, 0, element); } arraymove(array1,3,1); console.log(array1); arraymove(array2,4,0); console.log(array2); arraymove(array3,1,3); console.log(array3); arraymove(array4,0,1); console.log(array4); arraymove(array4,0,0); console.log(array4);