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How can I debounce a function to limit how often it runs during rapid events?

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How can I debounce a function to limit how often it runs during rapid events?

Asked on May 16, 2026

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Debouncing is a technique to limit how often a function is executed during rapid events by delaying its execution until a specified time has passed since the last event. Here's a simple implementation using JavaScript.

<!-- BEGIN COPY / PASTE -->
        function debounce(func, wait) {
            let timeout;
            return function(...args) {
                const context = this;
                clearTimeout(timeout);
                timeout = setTimeout(() => func.apply(context, args), wait);
            };
        }

        // Example usage:
        const handleResize = debounce(() => {
            console.log("Window resized");
        }, 300);

        window.addEventListener("resize", handleResize);
        <!-- END COPY / PASTE -->

Additional Comment:

The "debounce" function takes two parameters: "func" (the function to debounce) and "wait" (the delay in milliseconds).
It returns a new function that clears the previous timeout and sets a new one.
The example demonstrates debouncing a "handleResize" function that logs a message when the window is resized.
The function will only execute if 300 milliseconds have passed since the last resize event.

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How can I debounce a function to limit how often it runs during rapid events?

Asked on May 16, 2026

Answer

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