Home > Article > Web Front-end > React.js implements dynamic font color switching description

React.js implements dynamic font color switching description

韦小宝Original: 2018-03-14 12:40:304416browse

This article describes how react.js implements dynamic font color switching. Students who are not familiar with react.js implementing dynamic font color switching can take a look at this article with us. Stop talking nonsense. Let’s take a look directly at how react.js implements dynamic font color switching!

There are two ways to dynamically switch font colors.

The first method

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title></title>
    <script src="https://static.runoob.com/assets/react/react-0.14.7/build/react.min.js"></script>
    <script src="https://static.runoob.com/assets/react/react-0.14.7/build/react-dom.min.js"></script>
    <script src="https://static.runoob.com/assets/react/browser.min.js"></script>
  </head>
  <body>
    <p id="example"></p>
    <script type="text/babel">
      var LikeButton = React.createClass({
        getInitialState: function() {
          return {liked: "yellow"};
        },
        handleClick: function(event) {
          this.setState({liked:"blue"});
        },
        render: function() {
        var text = this.state.liked;
        var style = {
            color:text
        }{/*css样式既可以写在组件内也可以写在组件外*/}
          return (
            <p onClick={this.handleClick} style={style}>{/*这里不能直接用如style={color:"yellow"}这种属性赋予方式*/}
              点我，点我，点我我就变身。
            </p>
          );
        }
      });
      React.render(
        <LikeButton />,
        document.getElementById(&#39;example&#39;)
      );
    </script>
  </body>
</html>

This method can only switch styles with one click.

The second method

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title></title>
    <script src="https://static.runoob.com/assets/react/react-0.14.7/build/react.min.js"></script>
    <script src="https://static.runoob.com/assets/react/react-0.14.7/build/react-dom.min.js"></script>
    <script src="https://static.runoob.com/assets/react/browser.min.js"></script>
  </head>
  <body>
    <p id="example"></p>
    <script type="text/babel">
      var LikeButton = React.createClass({
        getInitialState: function() {
          return {liked: false};
        },
        handleClick: function(event) {
          this.setState({liked:!this.state.liked});
        },
        render: function() {
        var text = this.state.liked?"yellow":"blue";
        var style = {
            color:text
        }
          return (
            <p onClick={this.handleClick} style={style}>
              你我。点我切换状态。
            </p>
          );
        }
      });

      React.render(
        <LikeButton />,
        document.getElementById(&#39;example&#39;)
      );
    </script>
  </body>
</html>

There is not much difference between the two. The main reason is that the second method uses the ternary operation operator to achieve click Loop switching function.

Related recommendations:

react.js gives the identifier ref and gets the content

Use a very simple example to understand the idea of react.js high-order components

The above is the detailed content of React.js implements dynamic font color switching description. For more information, please follow other related articles on the PHP Chinese website!

Statement：

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Previous article：What does class="no-js" mean?Next article：What does class="no-js" mean?

See more

React.js implements dynamic font color switching description

There are two ways to dynamically switch font colors.

The first method

The second method

Related articles