/Javascript/React/Cannot read properties of undefined (reading 'length') selectionlist react native

Cannot read properties of undefined (reading 'length') selectionlist react native

fetch('https://obscure-reaches-65656.herokuapp.com/api/getCloseTime?city=Hsinchu&sTime=18&eTime=21')
.then(r => r.json())
.then(r => {
  const movieData = r.reduce((r,s) => {
    r.push({title: s.theater, data: s.movie});
    return r;
  }, []);

  this.setState({ movieData });
});

Source: stackoverflow.com

Similar codes

0 vote202 views1 answer
Select checkbox raitng in order javascript React
Javascript React
64 votes228 views7 answers
React router
Javascript React
2 votes203 views4 answers
React-hook-form-input npm
Javascript React
0 vote192 views1 answer
./src/components/Header/HeaderElements.js [1] Module not found: Can't resolve 'react-icons/fa' in '/Users/rubenmatamoros/Desktop/ucf-coding-bootcamp-2020/fitter/client/src/components/Header'
Javascript React
0 vote203 views1 answer
React native panresponder on click
Javascript React
0 vote204 views1 answer
React-bootstrap problem-install new version
Javascript React
-5 votes204 views3 answers
Use ref in component reactjs
Javascript React
0 vote188 views1 answer
React native showing double header stack and drawer menu
Javascript React
0 vote215 views1 answer
Appregistry react native
Javascript React
0 vote211 views1 answer
Salvar no localStorage react
Javascript React