Javascript Array.push is 945x faster than Array.concat 🤯🤔Shi Ling for Uilicious Posted on May 2, 2019 • Updated on May 6, 2019 • Originally published at uilicious.com TDLR If you are merging arrays with thousands of elements across, you can shave off seconds from the process by using arr1.push(...arr2) instead of arr1 = arr1.concat(arr2). If you really to go faster, you might even want to write your own implementation to merge arrays. Wait a minute... h
