[英](reactjs) get child component value
我有以下反應組件Timepicker:
export default class TimePicker extends Component{
render(){
return(
<div>
<input id={this.props.nameID} type="text"></input>
</div>);
}
}
TimePicker由SingleTask使用:
export default class SingleTask extends Component{
....
render(){
....
<TimePicker nameID="time" />
.....
}
}
如何從SingleTask中訪問TimePicker中的輸入值?
您可以通過兩種方式解決此問題:
:
export default class SingleTask extends Component{
yourFunction(){
var selectedTime = React.findDOMNode(this.refs.timePickerComp).querySelector('input').value;
}
render(){
....
<TimePicker ref="timePickerComp" nameID="time" />
.....
}
}
TimePicker:
export default class TimePicker extends Component{
function getSelectedTime(){
return document.getElementById(this.props.nameID).value;
}
render(){
return(
<div>
<input id={this.props.nameID} type="text"></input>
</div>);
}
}
SingleTask:
export default class SingleTask extends Component{
yourFunctionWhereYouNeedTime(){
var timeSelected = this.refs.timePickerComp.getSelectedTime(); // here you'll access the child component data.
}
render(){
....
<TimePicker ref="timePickerComp" nameID="time" />
.....
}
}
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