Trying to do something like this:
// Component one
toggleDropdown() {
setState({open: !open}
}
render () {
return (
ChildComponent toggle={this.toggleDropdown} />
)
}
Then in my child component I'd like to call that toggleDropdown function in another function like this:
// This gets triggered on click.
removeItem() {
// remove scripts then:
this.props.toggleDropdown()
}
I thought you'd be able to do something like this but it appears that you can only call prop functions on the element?
The prop that you are passing down to the child component is named toggle
and not toggleDropdown
and hence you need to call it like that in the removeItem component
// This gets triggered on click.
removeItem() {
this.props.toggle()
}
Other things that you might need to do is to bind your removeItem
function using bind
or arrow functions
constructor(props) {
super(props);
this.removeItem = this.removeItem.bind(this);
}
or
// This gets triggered on click.
removeItem = () => {
this.props.toggle()
}
您只需要调用toggle
而不是toggleDropdown
。
this.props.toggle();
The child component's prop is named toggle
, while toggleDropdown
belongs to the parent component.
This should work in the child component:
removeItem() {
this.props.toggle();
}
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