Run results for: Spread operator vs Array.push vs array[lastIndex]

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36

Browser: Chrome 67

Operating system: Windows 7

Device Platform: Desktop

Date tested: 5 years ago

Tests:

Using spread operator
const basicData = [{id: 1}, {id: 2}, {id: 3}]; const finalData = [...basicData, {id: 4}];
Using push function
var basicData = [{id: 1}, {id: 2}, {id: 3}]; basicData.push({id: 4});
Add to last index of array
var basicData = [{id: 1}, {id: 2}, {id: 3}]; basicData[basicData.length] = {id: 4};