componentDidUpdate(prevProps, prevState) {
const { data } = this.state;
if (prevState.data.date !== data.date) {
const startDate = new Date(data.date.startDate);
const endDate = new Date(data.date.endDate);
const countDuration = new Date(endDate - startDate).getDate();
this.setState({
data: {
...this.state.data,
duration: countDuration,
},
});
}
if (prevState.data.duration !== data.duration) {
const startDate = new Date(data.date.startDate);
const endDate = new Date(
startDate.setDate(startDate.getDate() + +data.duration - 1)
);
this.setState({
...this.state,
data: {
...this.state.data,
date: {
...this.state.data.date,
endDate: endDate,
},
},
});
}
}
But this gives me error, saying Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops.
It looks like you're changing the data.date and data.duration properties in the wrong place. As a result, the conditions prevState.data.date.== data.date
and prevState.data.duration.== data.duration
are never evaluating to true
and thus the setState
calls happen each time, causing an infinite loop
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