Throttling and Debouncing explained with Examples

That’s where Throttle and Debounce come to the rescue! In this blog, I’ll explain the difference between throttle and debounce with real-world examples, code snippets, and when to use each one.

這次要介紹的是 JS 實作 Debounce 和 Throttle，它們都有助於 JS 執行上效能的優化，怎麼說呢? 由於在網頁上進行滑鼠移動 (mousemove event) 或上下滾動視窗 (scroll event)，又或是視窗縮放時，會觸發多次的 DOM 監聽事件，但其實也有可能只需要經過反覆調整後的最終畫面，那這樣短時間內觸發過多次的事件將會造成效能上的不佳，因此就需要 Debounce 和 Throttle 減少事件的觸發。 透過 Debounce 處理過的函式，它會在某段時間內只執行觸發的

Two essential techniques for managing such high-frequency event handlers are debouncing and throttling. Though similar in purpose — limiting how often a function runs — they behave differently and serve distinct use cases.

這是上一篇「Race condition 的認識與解法」的衍伸篇章，也是我在技術分享會上有介紹到的主題。 考慮到資料都已整理好，決定與大家分享這些實用的前端優化技術。 為什麼介紹 Race condition 會延伸出 Throttle 與 Debounce，最主要的原因是就是我在研究 Race condition 解決方案時，我發現使用 AbortController 的方法在某些情境下與 Debounce 概念非常相似。 為了確認自己的想法是對是錯，所以才又去驗證自己的想法，這邊就把這 3 種做一個簡

Throttle vs. Debounce in JavaScript: Understanding the Differences and Use Cases When developing web applications, optimizing performance is a critical concern for developers. Two commonly used techniques for optimization in JavaScript are throttling and

Debouncing and throttling are techniques used to optimize the performance of functions triggered by events that occur frequently, such as scrolling, resizing, or typing.

這篇文章將會探討 debounce 和 throttle 這兩種用於最佳化事件處理的關鍵技術，並且詳解如何自己手寫實作 debounce 和 throttle。