Run results for: Finding items in array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

Browser: Firefox 67

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var items = []

for(var i = 0; i < 1000; i++) {
    items.push({id: i + 1})
}

var findItem = 523

Tests:

for
var index = -1 for(var i = 0; i < items.length; i++) { if(items[i].id === findItem) { index = i; break; } }
findIndex
items.findIndex(item => item.id === findItem)
find
items.find((a) => a.id === findItem)
reduce
items.reduce((acc, obj, i) => (obj.id === findItem) ? acc.concat(i) : acc, [])
filter
items.filter(function (element) { return element.id === findItem; });