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Chris Thomas
Front End Web Development Techdegree Graduate 34,909 PointsJavaScript array returning undefined.
I'm having a bit of trouble with this code challenge. It keeps returning undefined. I'm using ES6 arrow syntax. I've attached my code to the question.
const authors = [
{ firstName: "Beatrix", lastName: "Potter" },
{ firstName: "Ann", lastName: "Martin" },
{ firstName: "Beverly", lastName: "Cleary" },
{ firstName: "Roald", lastName: "Dahl" },
{ firstName: "Lewis", lastName: "Carroll" }
];
let fullAuthorNames;
// fullAuthorNames should be: ["Beatrix Potter", "Ann Martin", "Beverly Cleary", "Roald Dahl", "Lewis Carroll"]
// Write your code below
fullAuthorNames = authors.map(name => `${authors.firstName} ${authors.lastName}`);
2 Answers
Steven Parker
231,269 PointsIn your template string, you need to format using the properties of each item ("name") . The collection itself ("authors") doesn't have those properties.
Chris Thomas
Front End Web Development Techdegree Graduate 34,909 PointsAhh got it! Thank you!
const authors = [
{ firstName: "Beatrix", lastName: "Potter" },
{ firstName: "Ann", lastName: "Martin" },
{ firstName: "Beverly", lastName: "Cleary" },
{ firstName: "Roald", lastName: "Dahl" },
{ firstName: "Lewis", lastName: "Carroll" }
];
let fullAuthorNames;
// fullAuthorNames should be: ["Beatrix Potter", "Ann Martin", "Beverly Cleary", "Roald Dahl", "Lewis Carroll"]
// Write your code below
fullAuthorNames = authors.map(name => `${name.firstName} ${name.lastName}`);
``