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JavaScript JavaScript Array Iteration Methods Combining Array Methods Working with Objects

shirshah sahel
shirshah sahel
10,035 Points
Posted by shirshah sahel
shirshah sahel
10,035 Points

Using the map method on the authors array, create an array of full name strings, comprising the first name, then a space

I am wondering to know what am I doing wrong here. https://teamtreehouse.com/library/javascript-array-iteration-methods/combining-array-methods/working-with-objects

app.js 
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
const fullAuthorNames= authors.map(author=>`${author.firstName} ${author.lastName}`);
console.log(fullAuthorNames);

4 Answers

james south
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points
james south
.a{fill-rule:evenodd;}techdegree seal-36
james south
Front End Web Development Techdegree Graduate 33,271 Points

look at what the error is telling you - fullAuthorNames has already been declared. this is on line 8: let fullAuthorNames. your next line is line 12 where you again declare fullAuthorNames with const. that is the error. remove the const and it will pass.

shirshah sahel
shirshah sahel
10,035 Points
shirshah sahel
shirshah sahel
10,035 Points

I have removed the fullAuthorName on line 12 but still did'nt pass. can you please write down the code . Thanks,