一项功能处理多个按钮

Question

Having some trouble getting this code to work. Simply want to handle each button case differently using one function instead of 3 separate ones. Some very old stackoverflow answers recommended using a switch, but I can't seem to get it working. I get no errors with the below code, but pushing the buttons doesn't print anything to console.

  myFunction = button => {
      var x = button.id;
      switch (x) {
          case 'All Saves':
              console.log('All Saves');
              break;
          case 'Threads':
              console.log('Threads');
              break;
          case 'Comments':
              console.log('Comments');
              break;
          default:
              return false;
      }
  }


  render () {
    return (
      <div className="container">
        <div className="btn-group">
          <button type="button" onClick={this.myFunction.bind(this)} id="All Saves">All Saves</button>
          <button type="button" onClick={this.myFunction.bind(this)} id="Threads">Threads</button>
          <button type="button" onClick={this.myFunction.bind(this)} id="Comments">Comments</button>
        </div>
      </div>
      ) 
  }

Answer 1

You are forgetting to access the event's target property:

  myFunction = button => {
      var x = button.target.id;
      switch (x) {
          case 'All Saves':
              console.log('All Saves');
              break;
          case 'Threads':
              console.log('Threads');
              break;
          case 'Comments':
              console.log('Comments');
              break;
          default:
              return false;
      }
  }

Answer 2

call the function with the click event :

 class App extends React.Component { myFunction = event => { var x = event.target.id; switch (x) { case 'All Saves': console.log('All Saves'); break; case 'Threads': console.log('Threads'); break; case 'Comments': console.log('Comments'); break; default: return false; } } render() { return ( <div className="container"> <div className="btn-group"> <button type="button" onClick={e => this.myFunction(e)} id="All Saves">All Saves</button> <button type="button" onClick={e => this.myFunction(e)} id="Threads">Threads</button> <button type="button" onClick={e => this.myFunction(e)} id="Comments">Comments</button> </div> </div> ); } } ReactDOM.render(<App />, document.getElementById("root")); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> <div id="root"></div> 

Answer 3

 class MyButtons extends React.Component { myFunction = event => { var x = event.target.id; switch (x) { case 'All Saves': console.log('All Saves'); break; case 'Threads': console.log('Threads'); break; case 'Comments': console.log('Comments'); break; default: return false; } } render() { return ( <div className="container"> <div className="btn-group"> <button type="button" onClick={e => this.myFunction(e)} id="All Saves">All Saves</button> <button type="button" onClick={e => this.myFunction(e)} id="Threads">Threads</button> <button type="button" onClick={e => this.myFunction(e)} id="Comments">Comments</button> </div> </div> ); } } ReactDOM.render(<MyButtons />, document.getElementById("root")); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.6.3/umd/react.production.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.6.3/umd/react-dom.production.min.js"></script> <div id="root"></div> 

Here is the working example for your problem

https://codesandbox.io/s/gifted-night-di8de?fontsize=14

Answer 4

I'm not sure about this but try not putting space between two words in I'd like All values replace with it All-values . May be it can help.