如何在 React 中将 const 变量作为道具传递给组件？

Question

I am trying to pass the wantedAirline variable into the AirlineSection Component but I keep getting the error TypeError: Cannot read property 'wantedAirline' of undefined from inside the AirlineSection component.

render() {
    const wantedAirline = this.state.wantedAirline.filter(p =>
      p.name.includes(this.state.searchTerm)
    )
    return (
      <div>
        <header>Pokemon Searcher</header>

        <AirlineSection 
        wantedAirline = {wantedAirline}
        airlines = {this.state.airlines}
        handleDelete={this.handleDelete}/>

      </div>
    )
  }

The AirlineSection Component looks like this:

function AirlineSection(props){
    console.log(props, 'airline section props');
    return(
        <div>
            <h2>Airlines</h2>
            {props.airlines.map(airline => <AirlineCard key={airline.id}  wantedAirline={this.wantedAirline} airline={airline} handleDelete={props.handleDelete}/>)}
        </div>
    )
}

Answer 1

Replace wantedAirline={this.wantedAirline} with wantedAirline={props.wantedAirline} as looks like AirlineSection is your functional component.

you are passing wantedAirline as props so you also have to access it using props.