Hello everyone,
In my ReactJS website I get this error - `TypeError: Cannot read property 'number' of undefined`
`HTMLInputElement.anonymous ` why ?
I did console.log(this.state.number)
and number has a value in it.
class App extends Component {
constructor(props) {
super(props);
this.state = {
mobileNum: '',
number: '',
};
}
somefunction=()=>{ // Called with onKeyDown
this.setState({ number: document.getElementById('mySubmit').value });
enterPressed = () => {
const submit = document.getElementById('mySubmit');
submit.addEventListener('keyup', function (event) {
if (event.key === 'Enter') {
this.setState({ mobileNum: this.state.number }); // Here is the error line !
}
});
};
If I use setState
with if
condition in another function it will do error - setState is not a function
this.setState({ mobileNum: this.state.number })
is working also in a different fuction I made, but in enterPressed()
isn't.
Thanks for the helpers :)
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