reactjs-interview-coding/likeDislikeButton.js at master · enterthevoid8/reactjs-interview-coding · GitHub

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import { useState } from "react";

export default function LikeDislike() {
  const [liked, setLiked] = useState(false);

  return (
    <div>
      <button onClick={() => setLiked((prev) => !prev)}>
        {liked ? "Liked 👍" : "Like"}
      </button>
    </div>
  );
}

export default function LikeCounter() {
  const [liked, setLiked] = useState(false);
  const [count, setCount] = useState(0);

  const handleLike = () => {
    setLiked((prev) => {
      const nextLiked = !prev;
      setCount((countPrev) => countPrev + (nextLiked ? 1 : -1));
      return nextLiked;
    });
  };

  return (
    <button onClick={handleLike}>
      {liked ? "Liked" : "Like"} - {count}
    </button>
  );
}