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
}

对于typescript用户

import react from 'react'

interface FormInterface {
    [key: string]: string
}

const handleSubmit = (event: React.FormEvent<HTMLFormElement>) => {
   event.preventDefault();
   let formData = new FormData(event.currentTarget)
   let formObj: FormInterface = {}
   for (let [key, value] of Array.from(formData.entries())) {
     formObj[key] = value.toString()
   }
};

<form onSubmit={handleSubmit}>
   <input type="text" name="email" placeholder="Email" />
   <input type="password" name="password" placeholder="Password" />
   <button type="submit">Login</button>
</form>

同样，这个也可以用。

handleChange: function(state,e) {
  this.setState({[state]: e.target.value});
},
render : function() {
  return (
    <form>
      <input type="text" name="email" placeholder="Email" value={this.state.email} onChange={this.handleChange.bind(this, 'email')} />
      <input type="password" name="password" placeholder="Password" value={this.state.password} onChange={this.handleChange.bind(this, 'password')}/>
      <button type="button" onClick={this.handleLogin}>Login</button>
    </form>
  );
},
handleLogin: function() {
  console.log("EMail: ", this.state.email);
  console.log("Password: ", this.state.password);
}

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>

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;

如果元素名多次出现，则必须使用forEach()。

html

  <input type="checkbox" name="delete" id="flizzit" />
  <input type="checkbox" name="delete" id="floo" />
  <input type="checkbox" name="delete" id="flum" />
  <input type="submit" value="Save"  onClick={evt => saveAction(evt)}></input>

js

const submitAction = (evt) => {
  evt.preventDefault();
  const dels = evt.target.parentElement.delete;
  const deleted = [];
  dels.forEach((d) => { if (d.checked) deleted.push(d.id); });
  window.alert(deleted.length);
};

注意，本例中的dels是RadioNodeList，而不是数组，也不是Iterable。forEach()是列表类的内置方法。这里不能使用map()或reduce()。