Rxjs Operator 28: debounce Operator

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What is the debounce Operator and What Does It Do?

The debounce operator is used to control the timing of emissions from an observable. It introduces a delay during which emissions are collected. After the delay, only the most recent value is emitted. Key features of the debounce operator include:

• Delay and Emit: It introduces a delay between emissions and emits only the most recent value after the delay has passed.
• Inactivity-Based: It’s often used in scenarios where you want to capture values after a period of inactivity, such as user input or event handling.
• Preventing Rapid Emissions: It’s valuable when you want to avoid emitting values too quickly, especially in cases of rapid data changes.

How to Code the debounce Operator

Here’s how to use the debounce operator in a code example:

In this example:

• fromEvent(document.querySelector('.click'), 'click') creates an observable that captures click events.
• The debounce(() => timer(1000)) operator is applied to the observable. It introduces a 1-second delay, and only the most recent click event is emitted after 1 second of inactivity.

Where to Use the debounce Operator

The debounce operator can be effectively used in various scenarios, including:

1. User Input Handling: When you want to capture and process user input (e.g., typing or button clicks) only after a user has paused for a specific period.
2. Event Handling: In event-driven applications, it can be used to prevent rapid event handling and execute actions only after a period of inactivity. ie, search bar functionality.
3. Real-time Data Filtering: In real-time applications, it helps filter and process data based on inactivity periods , ensuring that only the most recent data is considered.

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Rxjs Operator 29: debounceTime Operator

Stackblitz Link
https://stackblitz.com/edit/rxjs-operator-debounce

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