Question

Assuming d is an "empty" object in scope, say:

var d = {};
...what is accomplished using the following code?

[ 'zebra', 'horse' ].forEach(function(k) {
d[k] = undefined;
});

Answer 1

The code assigns the value of undefined to properties in the object d using the forEach function.

Step-by-step explanation:

The given code is accomplishing the task of assigning the value of undefined to two properties, 'zebra' and 'horse', in the object d. The forEach function is being used to iterate over the array containing the strings 'zebra' and 'horse', and for each item, the corresponding property is created in the object d with the value of undefined.