我在 React 中有以下圖像滑塊,它按預(yù)期工作:
import React, { useState, useEffect } from "react"; import item1 from "./../assets/images/items/1.jpg"; import item2 from "./../assets/images/items/2.gif"; const imgs = [item1, item2]; // Array of images const ImageSlider = () => { const [current, setCurrent] = useState(0); // Initialize state to display the first image // Change image every 2 seconds useEffect(() => { const interval = setInterval(() => { setCurrent((current) => (current + 1) % imgs.length); // Move to the next image, go back to the first image after the last }, 4000); // Change every 2 seconds return () => { clearInterval(interval); // Clean up on unmount }; }, []); return ( <div className="relative"> <img src={imgs[0]} className="w-full h-auto opacity-0" alt="placeholder" /> {imgs.map((img, index) => ( <img key={index} src={img} alt={`slide-img-${index}`} className={`absolute top-0 transition-opacity duration-1000 ease-in-out ${ current === index ? "opacity-100" : "opacity-0" } w-full h-auto`} /> ))} </div> ); }; export default ImageSlider;
但它在 NextJS 中不起作用,我對(duì)其進(jìn)行了一些修改以修復(fù)錯(cuò)誤:
"use client"; import React, { useState, useEffect } from "react"; const imgs = ["/images/1.jpg", "/images/2.gif", "/images/3.jpg"]; const ImageSlider = () => { const [current, setCurrent] = useState(0); // Initialize state to display the first image // Change image every 2 seconds useEffect(() => { const interval = setInterval(() => { setCurrent((current) => (current + 1) % imgs.length); // Move to the next image, go back to the first image after the last }, 2000); // Change every 2 seconds return () => { clearInterval(interval); // Clean up on unmount }; }, []); return ( <div className="relative"> <img src={imgs[0]} className="w-full h-auto opacity-0" alt="placeholder" /> {imgs.map((img, index) => ( <img key={index} src={img} alt={`slide-img-${index}`} className={`absolute top-0 transition-opacity duration-1000 ease-in-out ${ current === index ? "opacity-100" : "opacity-0" } w-full h-auto`} /> ))} </div> ); }; export default ImageSlider;
我嘗試在組件頂部添加“使用客戶(hù)端”并修改代碼以修復(fù) IDE 顯示的錯(cuò)誤,數(shù)組中的所有圖像都顯示在瀏覽器網(wǎng)絡(luò)選項(xiàng)卡中。
在 Next.js 中,您不能直接在頂級(jí)組件中使用 React hooks。相反,您可以在 Next.js 的 useEffect 函數(shù)中使用 useEffect 掛鉤。以下是修改代碼以使其在 Next.js 中運(yùn)行的方法:
import { useState, useEffect } from "react"; const imgs = ["/images/1.jpg", "/images/2.gif", "/images/3.jpg"]; const ImageSlider = () => { const [current, setCurrent] = useState(0); useEffect(() => { const interval = setInterval(() => { setCurrent((current) => (current + 1) % imgs.length); }, 2000); return () => { clearInterval(interval); }; }, []); // Empty dependency array to run effect only once return (); }; export default ImageSlider;{imgs.map((img, index) => (
))}