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Start your free trialChristopher Evans
9,896 PointsCannot read property '2' of undefined.
Don't understand why anything would be undefined here...
const daysOfWeek = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
let abbreviatedDays;
// abbreviatedDays should be: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]
// Write your code below
abbreviatedDays = daysOfWeek.map((day) => day[0][1][2]);
1 Answer
Steven Parker
231,275 PointsThe expression "day[0][1][2]
" would be a way to index into a 3-dimensional array. But "day" represents a single string from the "daysOfWeek" array. So the first index will refer to a single character, and the next one will be "undefined" (and the third causes the error).
What you probably had in mind was to get three separate characters and concatenate them together, like "day[0]+day[1]+day[2]
".