React - 如何阻止 div onClick 更改同级 divs

Question

我有 6 个 div 元素，我希望能够单击其中一个元素，并仅更改我单击的 div 的类名。目前，当我单击一个 div 时，所有 div 类名都会更改。这个想法来自我试图将其转换为 React 组件的 vanilla JS 概念。我不确定 where/what 是否出错，如果有人能告诉我如何防止兄弟姐妹 div 的 onClicks 被解雇，或者如果我的问题从根本上是错误的，我将永远感激不已。这是我目前所拥有的：

import React, { useState} from "react";

import { Panels } from "../../components/index";
import { data } from "../../constants/index";
import "./gallery.css";


const Gallery = () => {
  const [isOpen, setIsOpen] = useState(false);

    const toggleOpen = () => {
        setIsOpen(!isOpen);
    };
    
  return (
    <div className="panels">
      {data.restaurants.map((restaurant, index) => (
        <div
          className={`panel panel${index} ${isOpen ? "open open-active" : ""}`}
          onClick={toggleOpen}
        >
          <Panels
            key={restaurant.name + index}
            description={restaurant.description}
            name={restaurant.name}
            website={restaurant.website}
          />
        </div>
      ))}
    </div>
  );
};

export default Gallery;

这是我的面板组件代码：

import React from "react";

const Panels = ({ name, description, website }) => {
    return (
  <div className="panel_text">
    <p>{description}</p>
    <p>{name}</p>
    <a href={website}>
      <p>Visit {name}</p>
    </a>
  </div>
)};

export default Panels;

Aaa 这是我的 CSS 代码：

*, *:before, *:after {
    box-sizing: inherit;
}

.panels {
    min-height: 100vh;
    overflow: hidden;
    display: flex;
}

.panel, .panel_text {
    background: '#fff';
    box-shadow: inse 0 0 0 5px rgba(255, 255, 255, 0.1);
    color: var(--color-golden);
    text-align: center;
    align-items: center;
    transition:
        font-size 0.7s cubic-bezier(0.61, -0.19, 0.7, -0.11),
        flex 0.7s cubic-bezier(0.61, -0.19, 0.7, -0.11);
    font-size: 20px;
    background-size: cover;
    background-position: center;
    flex: 1;
    justify-content: center;
    display: flex;
    flex-direction: column;
}

.panel0 {background-image: url(../../assets/defuegocarousel.jpg);}
.panel1 {background-image: url(../../assets/HaydenslakeSz.jpg);}
.panel2 {background-image: url(../../assets/stonecliffSz.jpg);}
.panel3 {background-image: url(../../assets/shigezooutside.png);}
.panel4 {background-image: url(../../assets/southparkSz.jpeg);}
.panel5 {background-image: url(../../assets/lechonoutside.jpg);}

.panel > * {
    margin: 0;
    width: 100%;
    transition: transform 0.5s;
    flex: 1 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.panel > *:first-child {transform: translateY(-100%);}
.panel.open-active > *:first-child {transform: translateY(0); }
.panel > *:last-child { transform: translateY(100%); }
.panel.open-active > *:last-child {transform: translateY(0); }

.panel_text p, a {
    text-transform: uppercase;
    
}

.panel p:nth-child(2) {
    font-size: 4rem;
}

.panel.open {
    flex: 5;
    font-size: 40px;
}

@media only screen and (max-width: 600px) {
    .panel p {
        font-size: 1rem;
    }
}

Answer 1

您的 isOpen 状态在所有 div 之间是通用的您应该为每个 div

的 isOpen 指定一个唯一值

您可以将 isOpen 状态更改为这样的对象：

import React, { useState} from "react";

import { Panels } from "../../components/index";
import { data } from "../../constants/index";
import "./gallery.css";


const Gallery = () => {
  const [isOpen, setIsOpen] = useState({});

    const toggleOpen = (index) => {
        setIsOpen(prevState => {...prevState ,[index]:!(!!prevState[index]) });
    };
    
  return (
    <div className="panels">
      {data.restaurants.map((restaurant, index) => (
        <div
          className={`panel panel${index} ${isOpen[index] ? "open open-active" : ""}`}
          onClick={()=>toggleOpen(index)}
        >
          <Panels
            key={restaurant.name + index}
            description={restaurant.description}
            name={restaurant.name}
            website={restaurant.website}
          />
        </div>
      ))}
    </div>
  );
};

export default Gallery;

Answer 2

您正在保存 布尔值 值作为 div 元素 是否打开。所以这个值被认为是所有 div 元素的 因为没有标识符 div 元素 是开放的。您需要保存一个 div 元素 值来标识打开的 div 元素.

因此您可以使用 div 元素的 index 而不是布尔值。例如，试试下面的代码。

import React, { useState} from "react";
import { Panels } from "../../components/index";
import { data } from "../../constants/index";
import "./gallery.css";

const Gallery = () => {
  const [isOpen, setIsOpen] = useState(null);
    
  return (
    <div className="panels">
      {data.restaurants.map((restaurant, index) => (
        <div
          className={`panel panel${index} ${isOpen === index ? "open open-active" : ""}`}
          onClick={() => setIsOpen(index)}
        >
          <Panels
            key={restaurant.name + index}
            description={restaurant.description}
            name={restaurant.name}
            website={restaurant.website}
          />
        </div>
      ))}
    </div>
  );
};

export default Gallery;

React - 如何阻止 div onClick 更改同级 divs

React - how to stop div onClick from changing sibling divs

css

onclick

dom-events

reactjs