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Dionte Barnes
10,140 PointsTypeError: Cannot read property 'map' of undefined
How can I fix this? import React from 'react'; import PropTypes from 'prop-types';
const GuestList = props => <ul> {props.guests.map((guest, index) => <li key={index}> <span>{guest.name}</span> <label> <input type="checkbox" checked={guest.isConfirmed} /> Confirmed </label> <button>edit</button> <button>remove</button> </li> )} </ul>;
GuestList.propTypes = { guests: PropTypes.array.isRequired }
export default GuestList;
1 Answer
Brendan Whiting
Front End Web Development Techdegree Graduate 84,735 PointsI can't say for sure without looking at more of the code, but you're probably not passing in the guest prop. You're trying to call .map() here: props.guests.map and it's saying there is no .map() function on guest because guest is undefined.