🚨 React Devs: This tiny thing controls your entire useEffect behavior 👀 useEffect is one of the most powerful hooks in React. The behavior of useEffect depends entirely on its dependency array. Here are the 3 most important ways to use it 👇 1️⃣ No Dependency Array useEffect(() => { // runs on every render }); 🔹 Executes after every render 2️⃣ Empty Dependency Array [] useEffect(() => { // runs only once }, []); 🔹 Runs only on initial render 🔹 Used for: API calls Initial setup Event listeners 3️⃣ With Dependencies [state/props] useEffect(() => { // runs when count changes }, [count]); 🔹 Runs when dependency value changes 🔹 Keeps effects in sync with state or props ✅ Best Practice Tips Always include all used variables in dependencies Avoid unnecessary re-renders Think of useEffect as: “React, do this when something changes.” Understanding dependencies = mastering React side effects 💡 #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #useEffect #ReactHooks #Coding #FullStackDeveloper #BackendDevelope
That’s some good information Malka , keep posting such informative content 🙌🏻
In the third case, will it be rendered on the first render and when changed, or only after the change?