score:3
the solution is writing
onchange={() => {console.log("hello")}}
why does it work like that?
onchange get an event handler, which is a function, to execute when the onchange
event happens. you didn't give the onchange a function, u just gave it a block.
a better solution would be:
const handleonchangeevent = () => {
console.log("hello")
}
onchange={handleonchangeevent}
btw, in your render function, i would change the
this.props.data != null
to:
this.props.data !== null
read about === in javascript.
score:0
for that event to work you would need to bind it.
try it this way:
onchange={() => console.log("hello")}
you can also find more information on how to handle events on react
Source: stackoverflow.com
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