javascript - 使文本网址在 div 中可点击

Question

我正在尝试让 url 在我的 React 应用程序中可点击。我目前的做法如下。

render() {

  function urlify(text) {
    var urlRegex = /(https?:\/\/[^\s]+)/g;
    return text.replace(urlRegex, function(url) {
      return '<a href="' + url + '">' + '</a>';
    })
  }

  const headingAvailable = (
    <span className="home_post_text">{urlify(postData.heading)}</span>
  );

  return (
    <div className="home_post_sections sec2 unchange_div">{headingAvailable}</div>
  );
}

但我无法让它正常工作。

例如:

如果我的文字是这样的

this is a good song https://www.youtube.com/watch?v=i9wBXC3aZ_I&index=8&list=RDxuAH21DkJow

我的文字被转换成这样

this is a good song <a href="https://www.youtube.com/watch?v=i9wBXC3aZ_I&index=8&list=RDxuAH21DkJow"></a>

我该如何解决这个问题？

Answer 1

React 默认转义字符串中的 html 标签，以防止 XSS 安全漏洞。

你需要返回一个 a 组件，像这样:

render() {

  function urlify(text) {
    const urlRegex = /(https?:\/\/[^\s]+)/g;
    return text.split(urlRegex)
       .map(part => {
          if(part.match(urlRegex)) {
             return <a href={part}>{part}</a>;
          }
          return part;
       });
  }

  const headingAvailable = (
    <span className="home_post_text">{urlify(postData.heading)}</span>
  );

  return (
    <div className="home_post_sections sec2 unchange_div">{headingAvailable}</div>
  );
}

class Hello extends React.Component {
  constructor(props) {
    super(props);
    this.text = 'this is a good song https://www.youtube.com/watch?v=i9wBXC3aZ_I&index=8&list=RDxuAH21DkJow';
  }

  urlify(text) {
    const urlRegex = /(https?:\/\/[^\s]+)/g;
    return text.split(urlRegex)
      .map(part => {
        if (part.match(urlRegex)) {
          return <a href={part} key={part}> {part} </a>;
        }
        return part;
      });
  }

  render() {
    return <div> {this.urlify(this.text)} </div>;
  }
}

ReactDOM.render( <
  Hello name = "World" / > ,
  document.getElementById('container')
);

<script src="https://unpkg.com/react@16.3.2/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16.3.2/umd/react-dom.development.js"></script>
<div id="container">
  <!-- This element's contents will be replaced with your component. -->
</div>