如何在React中使用样式化组件？

Question

请原谅我的困惑和新鲜感。 我正在尝试导出样式化的Button。 完全茫然和困惑。 请帮忙。 我并不是真的想导出2个按钮，如图所示，但是我想导出一个按钮，其中包含道具的样式，并且给定样式为默认样式，我认为:(

import React, {Component} from 'react'
import ReactDOM from 'react-dom'

import styled, { css } from 'styled-components'


export default class Button extends React.Component {
  btn: Btn = (props) => {
      styled.button`
      border-radius: 3px;
      padding: 0.25em 1em;
      margin: 0 1em;
      background: transparent;
      color: palevioletred;
      border: 2px solid palevioletred;

      ${props => props.primary && css`
        background: palevioletred;
        color: white;
      `}
    `
  }

  render(
    <Btn>Normal Button</Btn>
    <Btn primary>Primary Button</Btn>
  )
}

还有我的App元素（如果相关）

import React, { Component } from 'react'
import 'containers/App.css'
import Button from 'components/Button'

export default class App extends Component {
    render() {
      return (
        <div>
          <p>
            <Button primary="primary" label="Button Help" />
          </p>
        </div>
      )
    }
  }

Answer 1

如下定义您的样式按钮

import React from 'react';
import styled, {css} from 'react-emotion';

const StyledButton = styled('button')`
  border-radius: 3px;
  padding: 0.25em 1em;
  margin: 0 1em;
  background: transparent;
  color: palevioletred;
  border: 2px solid palevioletred;
`;
const primary = css`
  background: black;
  color: white;
`;
export default class Button extends React.Component {
  render() {
    return (
      <div>
        <StyledButton className={this.props.primary && `${primary}`}>
          {this.props.label}
        </StyledButton>
      </div>
    );
  }
}

在应用程序元素中，按如下方式使用buttton

import React, { Component } from 'react'
import 'containers/App.css'
import Button from 'components/Button'

export default class App extends Component {
    render() {
      return (
        <div>
          <p>
            <Button label="Button Help" /> // for normal Styled Button
            <Button primary label="Button Primary" /> // for Primary Styled Button                
          </p>
        </div>
      )
    }
  }