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将材质UI功能转换为类

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如何将React函数转换为类？我不明白如何将函数中的 const { classes } = props; 更新为类使用 . 以下是Material UI中的按钮功能：https://material-ui-next.com/demos/buttons/

import React from 'react';
import PropTypes from 'prop-types';
import { withStyles } from 'material-ui/styles';
import Button from 'material-ui/Button';

const styles = theme => ({
  button: {
    margin: theme.spacing.unit,
  },
  input: {
    display: 'none',
  },
});

function RaisedButtons(props) {
  const { classes } = props;
  return (
    <div>
      <Button variant="raised" className={classes.button}>
        Default
      </Button>
      <Button variant="raised" color="primary" className={classes.button}>
        Primary
      </Button>
      <Button variant="raised" color="secondary" className={classes.button}>
        Secondary
      </Button>
      <Button variant="raised" color="secondary" disabled className={classes.button}>
        Disabled
      </Button>
      <input
        accept="image/*"
        className={classes.input}
        id="raised-button-file"
        multiple
        type="file"
      />
      <label htmlFor="raised-button-file">
        <Button variant="raised" component="span" className={classes.button}>
          Upload
        </Button>
      </label>
    </div>
  );
}

RaisedButtons.propTypes = {
  classes: PropTypes.object.isRequired,
};

export default withStyles(styles)(RaisedButtons);

这是我转换为React类组件 . 它目前给我一个 'classes' is not defined no-undef 的错误消息，因为我错过了classes = props部分 .

import React, { Component } from 'react';
import Button from 'material-ui/Button';
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
import MyTheme from './MyTheme';
import './App.css';
import { withStyles } from 'material-ui/styles';
import PropTypes from 'prop-types';


const styles = theme => ({
  button: {
    margin: theme.spacing.unit,
  },
  input: {
    display: 'none',
  },
});


class App extends Component {
  constructor(props)
  {
    super(props);
  }  

  render() {
    return (
      <MuiThemeProvider theme={MyTheme}>
          <Button variant="raised" >
          Default
          </Button>
          <Button variant="raised" color="primary" className={classes.button}>
          Primary
          </Button>
          <Button variant="raised" color="secondary" className={classes.button} >
          Secondary
          </Button>
          <Button variant="raised" color="secondary" className={classes.button}>
          Disabled
          </Button>
          <input
              accept="image/*"
              className={classes.input}
              id="raised-button-file"
              multiple
              type="file"
          />
          <label htmlFor="raised-button-file">
          <Button variant="raised" component="span" >
            Upload
          </Button>
          </label>
      </MuiThemeProvider>
      );
  }
}

App.propTypes = {
  classes: PropTypes.object.isRequired,
};

export default withStyles(styles)(App);
javascript reactjs material-ui

2 回答

  • 8

    只需将其添加到渲染中，就像这样（将其更改为 this.props ）：

    render() {
    const { classes } = this.props;
    return (
    回复于
  • 0

    您还可以包装withStyles应用程序的组件，将样式对象作为arg传递 .

    看看：Meet Material-UI — your new favorite user interface library

    export default withStyles(styles) (
  class App extends Component {
    constructor(props) {
      super(props);
    }

    render() {
      const { classes } = this.props;
      return (
        ...
      );
    }
  }
)
    回复于

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