React selection option value change the variable data

I'm trying to become a front-end developer, so I'm creating a project with companies info. I tried to find on YouTube and here, but still I couldn't understand.

I want to use on Change to show the result, but How I pass the option value to the variable?

import React, { Component } from "react";    class BusinessCard extends Component {    constructor(props) {      super(props);        this.state = {        loading: true,        company: null,      };    }      async componentDidMount() {      let companyCod = "MSFT"; // I want receive the option value here      let companyUrl =        "https://www.alphavantage.co/query?function=OVERVIEW&symbol=" +        companyCod +        "&apikey=YOUR-API-KEY";      let response = await fetch(companyUrl);      let data = await response.json();      this.setState({ company: data, loading: false });    }      render() {      if (this.state.loading) {        return <div>loading</div>;      }        return (        <div>          <select>            <option value="MSFT">MSFT</option>            <option value="AAPL">AAPL</option>            <option value="IBM">IBM</option>          </select>            <h1>Company: {this.state.company.Name}</h1>          <h1>Symbol: {this.state.company.Symbol}</h1>        </div>      );    }  }  

https://stackoverflow.com/questions/65402726/react-selection-option-value-change-the-variable-data December 22, 2020 at 11:02AM