Loop Performance Issue with toUpperCase()

[YreiauW]

Hello to everyone.

I'm attempting to use the toUpperCase() function to convert a huge array of strings to uppercase. However, the process appears to be taking longer than planned, and I fear it may be affecting the performance of my application, which is unusual, so I checked through many documents but couldn't figure it out, so I found this post by scaler. Here's a condensed version of my code:

let inputArray = ["apple", "banana", "cherry", ...]; // Around 10,000 elements
let uppercaseArray = [];

for (let item of inputArray) {
    uppercaseArray.push(item.toUpperCase());
}

console.log(uppercaseArray);

Is there a faster way to apply the toUpperCase() function to a full array without sacrificing performance?

I appreciate your assistance and recommendations!

[stoneharry]

This does not seem to be a WoW emu specific problem.

The general advise for expensive logic is to parallelise it where possible.

So instead of having 1 loop that converts each item, use a algorithm like map reduce.

Map -> toUpperCase -> Split over many threads.
Reduce -> collect results until you have a single array

MapReduce - Wikipedia