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

Posted by Muaaz Matwadia
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Muaaz Matwadia
Full Stack JavaScript Techdegree Graduate 19,327 Points

.filter + .map

Any help?Thanks

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(todo => todo.todo[0,2,4])

1 Answer

Bert Witzel
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Bert Witzel
Full Stack JavaScript Techdegree Graduate 27,917 Points

This one is a challenging one. You have to use both map() and filter():

unfinishedTasks = todos
                    .filter(task => task.done === false)
                    .map(todos => todos.todo);