When dealing with events in Javascript, how do you grab the value? ReactJS Interview Question
Pass in the Javascript event (e) and call e.target.value handleChange(e) { var title = e.target.value; this.props.changeTitle(title); }

https://www.interviewquestionspdf.com/2017/02/when-dealing-with-events-in-javascript.html
Pass in the Javascript event (e) and call e.target.value
handleChange(e) {
var title = e.target.value;
this.props.changeTitle(title);
}
handleChange(e) {
var title = e.target.value;
this.props.changeTitle(title);
}