CSS usage in React.js-JS Tutorial-php.cn

CSS usage in React.js

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Release： 2018-03-13 14:56:50

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This time I will bring you the use of CSS in React.js. What are the precautions for using CSS in React.js?The following is a practical case, let’s take a look.

Inline style (not recommended for web development, but widely used in React-Native)

The disadvantage is that animation, pseudo-classes (hover), etc. cannot be used

import React from 'react';export default class ComponentHeader extends React.Component {
render() {    const styleComponentHeader = {        header: {            backgroundColor: '#333333',            color: '#FFFFFF',            "padding-top": '15px',            paddingBottom: '15px'
        },        // 还可以定义其他的样式
    };    return (        <header>
            <h1>这里是头部</h1>
        </header>
    )
  }
}

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CSS usage in React.js

Expression in inline style: When clicked, padding-top and paddingBottom become larger or smaller

import React from &#39;react&#39;;export default class ComponentHeader extends React.Component {constructor() {  super();  this.state = {      miniHeader: false
  };
}
switchHeader() {  this.setState({      miniHeader: !this.state.miniHeader
  });
};
render() {  const styleComponentHeader = {      header: {          backgroundColor: &#39;#333333&#39;,          color: &#39;#FFFFFF&#39;,          "padding-top": this.state.miniHeader ? &#39;3px&#39; : &#39;15px&#39;,          paddingBottom: this.state.miniHeader ? &#39;3px&#39; : &#39;15px&#39;
      },      // 还可以定义其他的样式
  };      return (          <header style={styleComponentHeader.header} onClick={this.switchHeader.bind(this)}>
              <h1>这里是头部</h1>
          </header>
      )
  }
}

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CSS usage in React.js

3.CSS

ModularizationFirst npm the following three plug-ins

"babel-plugin-react-html-attrs": "^2.0.0","style-loader": "^0.13.1","css-loader": "^0.25.0"

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Use the babel-plugin-react-html-attrs plug-in, when adding class to the label You can use class directly

<h1 class="smallFontSize">这里是头部</h1>

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You cannot use class before using this plug-in, you can only use classname

<h1 className="smallFontSize">这里是头部</h1>

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4. Interconversion between JSX style and CSS style

CSS usage in React.js

Copy the code on the right to where you want to use it. The specific usage is as follows:

import React from &#39;react&#39;;export default class ComponentFooter extends React.Component {
render() {    var footerConvertStyle = {        "miniFooter": {            "backgroundColor": "#333333",            "color": "#ffffff",            "paddingLeft": "20px",            "paddingTop": "3px",            "paddingBottom": "3px"
        },        "miniFooter_h1": {            "fontSize": "15px"
        }
    }    return (        <footer style={footerConvertStyle.miniFooter}>
            <h1 style={footerConvertStyle.miniFooter_h1}>这是页脚, 一般放置版权的一些信息.</h1>
        </footer>
    )
  }
}

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to the php Chinese website Other related articles!