Create object from another one using filter function

Tags: , ,



I’m trying to create an array of objects using an array of objects. My first array is like that : enter image description here

And I want to create an object list with only an id, a name and a task. This is what i do actually, but it doesn’t work :

var lists = data.filter(l => {
            return new ListModel(l.listId, l.listName, 'todo');
});

The ListModel object is :

class ListModel {
    constructor(id, name, tasks) {
        this.id = id;
        this.name = name;
        this.tasks = tasks;
    }

    setId(id) {
        this.id = id;
    }

    setName(name) {
        this.name = name;
    }

    setTask(task) {
        this.task = task;
    }
}

Answer

The filter() function is more-so utilized for returning an array based upon some search criteria, similar to a WHERE clause. What you want is to utilize is the map() function using something like this:

var lists = data.map(l => {
    return new ListModel(l.listId, l.listName, 'todo');
});


Source: stackoverflow