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Taylor Hall
Front End Web Development Techdegree Graduate 14,496 PointsWhy doesn't this work?
const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday']; let dayAbbreviations = [];
// dayAbbreviations should be: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'] // Write your code below
dayAbbreviations = days.forEach(day => day.slice(0, 1));
const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
let dayAbbreviations = [];
// dayAbbreviations should be: ['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa']
// Write your code below
dayAbbreviations = days.forEach(day => day.slice(0, 1));
1 Answer
John Johnson
11,790 PointsforEach attempts to perform an action on each iteration of the array, but it unfortunately cannot return an array itself. If you run this in the console, you'll see that it returns undefined
Your solution attempts to set dayAbbreviations equal to a JS function that will return undefined.
For the solution, you don't actually need to set dayAbbreviations equal to anything. You'll actually want the action preformed on each iteration of forEach to append the sliced string to the dayAbbreviations list.
An additional tip: when you slice(x, y) x = 0-based starting position y = 0-based position to end before (basically, this number is non-inclusive)
So you'll actually want slice(0, 2)