javascript - 在 react js中悬停在父div上显示子div

Question

你好 :) 我对 React js 比较陌生，我正在尝试将动画应用到另一个 div 的子 div 上，父 div“portfolio-product-item”显示特色图片从 wp rest api 中提取，子 div“portfolio-product-item-details”具有帖子的内容。

我想做的是悬停在父div中的特色图片上时显示内容，我的代码是这样的，我该如何实现？

    import React from 'react';
    import Home from './Home';
    require ('../../app.css');
    require ('../../animate.min.css');
    class Portfolio extends React.Component{
      render(){
       console.log(this.props.data.length);
       var contents=[];
       for (var i = 0; i < this.props.data.length; i++) {
       contents.push(
         <div className="col-xs-12 col-md-4">
            <div id="portfolio-product-item" >
              <img src={this.props.data[i].featured_image} />
              <div ref= "productDetails" id ="portfolio-product-item-details"  dangerouslySetInnerHTML={{__html: this.props.data[i].content.rendered}} />
              </div>
           </div>
        );
    }
    return(
      <div className = "container">
          <div className="row">
            <section className="portfolio">
               <h1>Our Latest Work</h1>
               <p id="below-header">These are some of the works that has been keeping us busy over the years. See for yourself what we can do.</p>
               <div className="col-xs-12 ">
                  {contents}
               </div>
            </section>
          </div>
      </div>
    )
  }
}
export default Portfolio;

Answer 1

React 允许从虚拟 DOM 添加/删除元素。使用 onMouseEnter 和 onMouseLeave 设置显示/隐藏状态。

<img 
  onMouseEnter={() => this.setState({ show: true })}
  onMouseLeave={() => this.setState({ show: false })} 
/>

然后根据状态显示/隐藏详细信息:

{this.state.show ? 
    <div ref= "productDetails" id ="portfolio-product-item-details"   
         dangerouslySetInnerHTML={{__html: this.props.data[i].content.rendered}}
    />
: null}