Performance implementing nested loops in JavaScript when filtering large datasets
I tried several approaches but none seem to work. I've spent hours debugging this and After trying multiple solutions online, I still can't figure this out. I've searched everywhere and can't find a clear answer. I'm working with a important performance scenario when filtering large datasets using nested loops in JavaScript. Specifically, I'm using a combination of `forEach` and `filter`, which seems to be causing a slowdown as the dataset grows. Here’s a simplified version of my code: ```javascript const largeDataset = Array.from({ length: 100000 }, (_, i) => ({ id: i, value: Math.random() })); const filterCriteria = [0.2, 0.8]; const filteredResults = largeDataset.filter(item => { let isValid = false; filterCriteria.forEach(criteria => { if (item.value >= criteria) { isValid = true; } }); return isValid; }); ``` The performance degrades noticeably when `largeDataset` increases beyond 50,000 items. I’ve tried using a simple `for` loop instead of `forEach`, but it didn’t yield any important improvements. I also considered using `some()` for the inner filtering, but I’m not sure if that would be the best practice in terms of readability and performance. When testing with Chrome's performance tools, I noticed that the script is taking a considerable amount of time just in the filtering phase. I’m wondering if there are better approaches or design patterns I could use to optimize this filtering process. Could switching to a more functional style or using libraries like Lodash help? Also, what are the trade-offs associated with these methods? Any guidance would be appreciated! My development environment is Windows. My development environment is Linux. Has anyone else encountered this? My team is using Javascript for this CLI tool. What are your experiences with this? The project is a application built with Javascript. Am I missing something obvious? The project is a microservice built with Javascript. Could someone point me to the right documentation?