Antd庫：嘗試渲染圖像時如何處理？

Question

嘗試渲染圖像時如何處理？ 我在下面嘗試，但它沒有顯示圖像。

const columns = [
  {
    title: 'image',
    dataIndex: 'notificationImage.url',
    key: 'notificationImage.url',
    render: (record) =>
    //console.log(text, record && record.notificationImage && record.notificationImage.url, index)
    {
      record && record.notificationImage &&
        <img
          width="460" height="345"
          src={record.notificationImage.url} />
    }
  },]

Answer 1

我認為您的代碼塊應如下所示：

添加return

render: (record) =>
    {
      return record && record.notificationImage && // <---- HERE
        <img
          width="460" height="345"
          src={record.notificationImage.url} />
    }

或者

刪除大括號，因為你有一行執行

render: (record) => record && record.notificationImage &&
        <img
          width="460" height="345"
          src={record.notificationImage.url} />

---

我還添加了代碼片段，希望能消除您的疑慮

 const { useState, useEffect } = React; const App = () => { var res = { "image": { "url": "https://i.stack.imgur.com/GLI4g.png?s=328&g=1" } } const getImage = () => { res && res.image && <img src={res.image.url} /> } const getImage2= () => { return res && res.image && <img src={res.image.url} /> } const getImage3= () => res && res.image && <img src={res.image.url} />; return ( <div> First: {getImage()} <hr/> Second: {getImage2()} <hr/> Third: {getImage3()} </div> ); } ReactDOM.render(<App />, document.getElementById('react-root'));

 <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.4/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.4/umd/react-dom.production.min.js"></script> <div id="react-root"></div>