handle delete button react code example

Example: delete button react

Let me guess, Are you looking for something like this?

class Example extends React.Component {
    constructor(){
    this.state = {
      data: [
        {id:1, name: 'Hello'},
        {id:2, name: 'World'},
        {id:3, name: 'How'},
        {id:4, name: 'Are'},
        {id:5, name: 'You'},
        {id:6, name: '?'}
      ]
    }
  }

  // shorter & readable 
  delete(item){
    const data = this.state.data.filter(i => i.id !== item.id)
    this.setState({data})
  }

  // or this way, it works as well
  //delete(item){
  //  const newState = this.state.data.slice();
  //    if (newState.indexOf(item) > -1) {
  //    newState.splice(newState.indexOf(item), 1);
  //    this.setState({data: newState})
  //  }
  //}

  render(){
    const listItem = this.state.data.map((item)=>{
        return <div key={item.id}>
        <span>{item.name}</span> <button onClick={this.delete.bind(this, item)}>Delete</button>
      </div>
    })
    return <div>
        {listItem}
    </div>
  }
}

React.render(<Example />, document.getElementById('container'));
In this example pay attention how i'm binding delete method and pass there new parameter. fiddle

I hope it will help you.

Thanks