What does the 'spread' syntax allow you to do with arrays and objects?

The spread syntax is a powerful feature in JavaScript that enables unpacking values from arrays or objects, making it easy to work with collections of data. When used with arrays, the spread syntax allows you to take each element of an array and expand it into individual items. For example, if you have an array like [1, 2, 3], using the spread syntax ... allows you to spread these elements into another array or function call, such as [...array1, ...array2] to merge two arrays.

Similarly, when applied to objects, the spread syntax lets you unpack properties from an object. For instance, you could take an object {a: 1, b: 2} and spread its properties into another object: {...obj}. This results in the properties of obj being copied over to the new object.

The other options do not accurately describe the primary function of the spread syntax. Combining arrays into an object is not something the spread syntax does directly; instead, it facilitates merging or copying elements or properties. Iterating over nested values is a different process that requires looping techniques rather than using spread syntax. Assigning values to multiple variables can typically be done with destructuring,