Multiple input forms have change events, so if optimization allows multiple inputs to share a change event.

The following is a demo in react syntax:

   <div>
          <select name="lesson" value={this.state.lesson} onChange={ this.handlerChange }>
            <option value={1}>1阶段</option>
            <option value={2}>2阶段</option>
            <option value={3}>3阶段</option>
          </select> --- { this.state.lesson }
        </div>
        <div>
          <textarea name='note' value={ this.state.note } onChange = { this.handlerChange }></textarea>
        </div>

state = {
    lesson: 1,
    note: '',
  }

 handlerChange = (event) => {
    console.log(event.target.name)
    this.setState({ [event.target.name]: event.target.value })
  }

The above is achieved by defining the name attribute on the tag

The second method is the most common way I use in vue. Assuming that the event parameters are fixed and you want to expand the passed parameters, you can do this:

   <div>
          <select value={this.state.lesson} onChange={ (e)=>this.handlerChange(e,"lesson") }>
            <option value={1}>1阶段</option>
            <option value={2}>2阶段</option>
            <option value={3}>3阶段</option>
          </select> --- { this.state.lesson }
        </div>
        <div>
          <textarea value={ this.state.note } onChange = {(e)=>this.handlerChange(e,"note") }></textarea>
        </div>

 handlerChange = (event,type) => {
    console.log(type)
    this.setState({ [type]: event.target.value })
  }

The expression may not be very clear, but if you understand it, I believe it will be much more convenient for you in the project!