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Start your free trialHumberto Ventura
Front End Web Development Techdegree Graduate 14,734 PointsWhy do I get TypeError: x is not a function? I
I did everything as Gui says in the video, tried the steps to add a remove name function and I got this error everytime the handler calls the function.Why?
Humberto Ventura
Front End Web Development Techdegree Graduate 14,734 Points(App,js) removeGuest = index => this.setState({ guests:[ ...this.state.guests.slice(0,index), ...this.state.guests.slice(index +1) ] });
// component in guest list removeGuest = {this.state.removeGuest }
(GuestList.js)
// handler handleRemove ={() => props.removeGuest(index)} --THIS IS THE LINE OF CODE THE COMPILER SAYS THE ERROR IS, IT SAYS removeGuest() IS NOT A FUNCTION
// In proptypes removeGuest: PropTypes.func.IsRequired,
(Guest.js)
<button onClick = {props.handleRemove}>remove</button>
//proptypes handleRemove:PropTypes.func.isRequired,
Thanks!
1 Answer
jay aljoe
4,113 Pointsyou have made a mistake when passing "removeGuest" to "GuestList" component
// This is wrong
removeGuest = {this.state.removeGuest }
// This is correct
removeGuest = {this.removeGuest }
you could also implement "removeGuestAt" like this which is a little better
// remove user
removeGuestAt = index => this.setState({
guests:[
...this.state.guests.filter( (element, idx) => index !== idx)
]
});
Antti Lylander
9,686 PointsAntti Lylander
9,686 PointsPlease, share your code. It's impossible to say without it. :)