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    Wednesday, April 2

    useEffect Explained: Using a Smart Home Analogy to Ace Your React Interview

    Frontend 655 Comments2 Mins ReadAdnan Ali Ba OsmanBy

    Ever wondered what it would be like if your React component was a smart home? 🏡

    Well, if it were, useEffect would be the automation system, making sure you don’t have to run around flipping switches or adjusting thermostats. Because who has time for that, right?

    ➡ useState: The Devices in Your Smart Home

    First, let’s talk about useState. Think of it as the various devices in your smart home, like lights, thermostats, and security cameras. These devices can be turned on, off, or adjusted as needed. Just like you decide whether the lights should be on or off, useState helps you decide and manage the current state of your component.

    ➡ useEffect: The Automation System

    Now, think of useEffect as the automation system that controls these devices based on certain conditions or events. For example, when it gets dark, the lights turn on automatically. When the temperature changes, the thermostat adjusts itself. Similarly, useEffect runs specific tasks when certain state variables change or when the component first loads.

    🔄 The Power of Automation

    Just like your smart home’s automation system ensures the lights turn on when it gets dark and off when it’s light again, useEffect ensures that your component performs necessary tasks whenever the relevant state changes or when the component is initialized.

    So next time you’re working with useEffect, just imagine you’re setting up the perfect smart home — no need to run around making manual adjustments. Let useEffect handle the side effects for you, keeping everything running smoothly.

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