你可以将按钮上的onClick事件处理程序切换到表单上的onSubmit处理程序:

render : function() {
      return (
        <form onSubmit={this.handleLogin}>
          <input type="text" name="email" placeholder="Email" />
          <input type="password" name="password" placeholder="Password" />
          <button type="submit">Login</button>
        </form>
      );
    },

然后，您可以使用FormData来解析表单(如果需要的话，还可以从其条目构造一个JSON对象)。

handleLogin: function(e) {
   const formData = new FormData(e.target)
   const user = {}

   e.preventDefault()

   for (let entry of formData.entries()) {
       user[entry[0]] = entry[1]
   }

   // Do what you will with the user object here
}

对付裁判的一个简单方法:

class UserInfo extends React.Component { constructor(props) { super(props); this.handleSubmit = this.handleSubmit.bind(this); } handleSubmit(e) { e.preventDefault(); const formData = {}; for (const field in this.refs) { formData[field] = this.refs[field].value; } console.log('-->', formData); } render() { return ( <div> <form onSubmit={this.handleSubmit}> <input ref="phone" className="phone" type='tel' name="phone"/> <input ref="email" className="email" type='tel' name="email"/> <input type="submit" value="Submit"/> </form> </div> ); } } export default UserInfo;

如果你在项目中使用Redux，你可以考虑使用这个更高阶的组件https://github.com/erikras/redux-form。

在javascript的许多事件中，我们有event，它给出一个对象，包括发生了什么事件，值是什么等等。

这也是我们在ReactJs中使用的表单…

所以在你的代码中，你将状态设置为新值…就像这样:

class UserInfo extends React.Component {

  constructor(props) {
    super(props);
    this.handleLogin = this.handleLogin.bind(this);
  }

  handleLogin(e) {
    e.preventDefault();
    for (const field in this.refs) {
      this.setState({this.refs[field]: this.refs[field].value});
    }
  }

  render() {
    return (
        <div>
          <form onSubmit={this.handleLogin}>
            <input ref="email" type="text" name="email" placeholder="Email" />
            <input ref="password" type="password" name="password" placeholder="Password" />
            <button type="button">Login</button>
          </form>
        </div>
    );
  }
}

export default UserInfo;

另外，这是React v.16中的表单示例，只是作为将来创建表单的参考:

class NameForm extends React.Component {
  constructor(props) {
    super(props);
    this.state = {value: ''};

    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  }

  handleChange(event) {
    this.setState({value: event.target.value});
  }

  handleSubmit(event) {
    alert('A name was submitted: ' + this.state.value);
    event.preventDefault();
  }

  render() {
    return (
      <form onSubmit={this.handleSubmit}>
        <label>
          Name:
          <input type="text" value={this.state.value} onChange={this.handleChange} />
        </label>
        <input type="submit" value="Submit" />
      </form>
    );
  }
}

不需要使用引用，你可以使用事件访问

function handleSubmit(e) {
    e.preventDefault()
    const {username, password } = e.target.elements
    console.log({username: username.value, password: password.value })
}

<form onSubmit={handleSubmit}>
   <input type="text" id="username"/>
   <input type="text" id="password"/>
   <input type="submit" value="Login" />
</form>

这是最简单的方法

const formValidator = (form) => {
    let returnData = {}
    console.log(form.length);

    for (let i = 0; i < form.length; i++) {
        const data = form[i]
        if (data.name != null && data.name != "") {
            returnData[data.name] = data.value;
        }
    }
    return returnData
}

在形式上

<form onSubmit={(e) => {
          e.preventDefault()
          let data = formValidator(e.currentTarget)
         }}>
          <RoundTextFiled name='app-id' style={{ marginTop: '10px', borderRadius: '20px' }} label="App id" fullWidth required />
          <RoundTextFiled name='api-hash' style={{ marginTop: '5px' }} label="Api hash" fullWidth required />
          <RoundTextFiled name='channel-id' style={{ marginTop: '5px' }} label="Channel id" fullWidth required />
          <Button type='submit' variant="contained" fullWidth style={{ padding: '10px', marginTop: '5px', borderRadius: '10px' }}>Login</Button>
        </form>