import React, { Component } from "react";

class RadionButtons extends Component {
  constructor(props) {
    super(props);

    this.state = {
      // gender : "" , // use this one if you don't wanna any default value for gender
      gender: "male" // we are using this state to store the value of the radio button and also use to display the active radio button
    };

    this.handleRadioChange = this.handleRadioChange.bind(this);  // we require access to the state of component so we have to bind our function 
  }

  // this function is called whenever you change the radion button 
  handleRadioChange(event) {
      // set the new value of checked radion button to state using setState function which is async funtion
    this.setState({
      gender: event.target.value
    });
  }


  render() {
    return (
      <div>
        <div check>
          <input
            type="radio"
            value="male" // this is te value which will be picked up after radio button change
            checked={this.state.gender === "male"} // when this is true it show the male radio button in checked 
            onChange={this.handleRadioChange} // whenever it changes from checked to uncheck or via-versa it goes to the handleRadioChange function
          />
          <span
           style={{ marginLeft: "5px" }} // inline style in reactjs 
          >Male</span>
        </div>
        <div check>
          <input
            type="radio"
            value="female"
            checked={this.state.gender === "female"}
            onChange={this.handleRadioChange}
          />
          <span style={{ marginLeft: "5px" }}>Female</span>
        </div>
      </div>
    );
  }
}
export default RadionButtons;

使无线电组件为哑巴组件和通过道具从父。

import React from "react";

const Radiocomponent = ({ value, setGender }) => ( 
  <div onChange={setGender.bind(this)}>
    <input type="radio" value="MALE" name="gender" defaultChecked={value ==="MALE"} /> Male
    <input type="radio" value="FEMALE" name="gender" defaultChecked={value ==="FEMALE"}/> Female
  </div>
);

export default Radiocomponent;

它很容易测试，因为它是一个哑组件(一个纯函数)。

我们是这样做的:

export default function RadioButton({ onChange, option }) {
    const handleChange = event => {
        onChange(event.target.value)
    }

    return (
        <>
            <div className="custom-control custom-radio">
                <input
                    type="radio"
                    id={ option.option }
                    name="customRadio"
                    className="custom-control-input"
                    onChange={ handleChange }
                    value = { option.id }
                    />
                    <label
                        className="custom-control-label"
                        htmlFor={ option.option }
                        >
                        { option.option }
                    </label>
            </div>
        </>
    )
}

下面是在react js中实现单选按钮的最简单方法。

class App extends React.Component { setGender(event) { console.log(event.target.value); } render() { return ( <div onChange={this.setGender.bind(this)}> <input type="radio" value="MALE" name="gender"/> Male <input type="radio" value="FEMALE" name="gender"/> Female </div> ) } } ReactDOM.render(<App/>, document.getElementById('app')); <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script> <div id="app"></div>

编辑

你可以使用箭头函数代替绑定。将上面的代码替换为

<div onChange={event => this.setGender(event)}>

对于默认值，使用defaultChecked，如下所示

<input type="radio" value="MALE" defaultChecked name="gender"/> Male

任何对渲染的改变都应该通过状态或道具(react doc)来改变。

所以这里我注册了输入的事件，然后改变状态，这将触发渲染显示在页脚上。

var SearchResult = React.createClass({
  getInitialState: function () {
    return {
      site: '',
      address: '',
    };
  },
  onSiteChanged: function (e) {
    this.setState({
      site: e.currentTarget.value,
    });
  },

  onAddressChanged: function (e) {
    this.setState({
      address: e.currentTarget.value,
    });
  },

  render: function () {
    var resultRows = this.props.data.map(function (result) {
      return (
        <tbody>
          <tr>
            <td>
              <input
                type="radio"
                name="site_name"
                value={result.SITE_NAME}
                checked={this.state.site === result.SITE_NAME}
                onChange={this.onSiteChanged}
              />
              {result.SITE_NAME}
            </td>
            <td>
              <input
                type="radio"
                name="address"
                value={result.ADDRESS}
                checked={this.state.address === result.ADDRESS}
                onChange={this.onAddressChanged}
              />
              {result.ADDRESS}
            </td>
          </tr>
        </tbody>
      );
    }, this);
    return (
      <table className="table">
        <thead>
          <tr>
            <th>Name</th>
            <th>Address</th>
          </tr>
        </thead>
        {resultRows}
        <tfoot>
          <tr>
            <td>chosen site name {this.state.site} </td>
            <td>chosen address {this.state.address} </td>
          </tr>
        </tfoot>
      </table>
    );
  },
});

jsbin

这里只是一个想法:当涉及到React中的无线电输入时，我通常以一种不同的方式渲染它们，这在前面的回答中提到过。

如果这可以帮助任何需要渲染大量单选按钮的人:

import React from "react" import ReactDOM from "react-dom" // This Component should obviously be a class if you want it to work ;) const RadioInputs = (props) => { /* [[Label, associated value], ...] */ const inputs = [["Male", "M"], ["Female", "F"], ["Other", "O"]] return ( <div> { inputs.map(([text, value], i) => ( <div key={ i }> <input type="radio" checked={ this.state.gender === value } onChange={ /* You'll need an event function here */ } value={ value } /> { text } </div> )) } </div> ) } ReactDOM.render( <RadioInputs />, document.getElementById("root") ) <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script> <div id="root"></div>