Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript Array Iteration Methods Combining Array Methods Combining filter() and map()

Posted by Brian Johnson
.a{fill-rule:evenodd;}techdegree seal-36
Brian Johnson
Front End Web Development Techdegree Graduate 20,806 Points

Please help me figure this out without interpolation

I need a little guidance on this one. I think I go wrong on the map method.

app.js 
const todos = [
    {
        todo: 'Buy apples',
        done: false
    },
    {
        todo: 'Wash car',
        done: true
    },
    {
        todo: 'Write web app',
        done: false
    },
    {
        todo: 'Read MDN page on JavaScript arrays',
        done: true
    },
    {
        todo: 'Call mom',
        done: false
    }
];
let unfinishedTasks;

// unfinishedTasks should be: ["Buy apples", "Write web app", "Call mom"]
// Write your code below
let unfinishedTasks = todos
    .filter(task => task.done === false)
    .map(task => task:todo);

console.log(unfinishedTasks);

1 Answer

Thayer Y
Thayer Y
29,787 Points

your code is fine just change 2 things 

let unfinishedTasks = todos   // delete the let because you already declared it.
.map(task => task:todo)  // change the colon : to dot.
Brian Johnson
.a{fill-rule:evenodd;}techdegree seal-36
Brian Johnson
Front End Web Development Techdegree Graduate 20,806 Points

Thanks Thayer I was so close too.