Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Adrian Collier
Adrian Collier
Courses Plus Student 6,939 Points

I'm getting a "Unexpected token ILLEGAL" error on line 29. I feel like the code and syntax is correct.

I feel like my syntax and code are correct. Where am I going wrong?

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
unfinishedTasks = todos
  .filter(task => task.done == 'false')
  .map(task => `${task.todo}`);

2 Answers

Clayton Perszyk
MOD
Clayton Perszyk
Treehouse Moderator 48,723 Points
Clayton Perszyk
Clayton Perszyk
Treehouse Moderator 48,723 Points

In filter, you are comparing a boolean to a string. Remove the template literal syntax from map.

Carlos Chavez
Carlos Chavez
5,691 Points
Carlos Chavez
Carlos Chavez
5,691 Points

The problem is in the method filter. like Calyton said, you're comparing a string to a boolean. Write false with no quotes. The template literal at map is not intervening, but it's unnecessary in this case. task.todo would be enough.