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Front End Web Development Techdegree Graduate 14,211 Pointsspread operator in this case
Hi,
can someone help me understand what the spread operator does in this case? [...arr, ...innerMovies]
thanks
1 Answer
Steven Parker
231,184 PointsWhat the spread operator itself does is to convert a collection of items into its individual elements. In your example, "arr
" is an array with potentially several elements; and "...arr
" is the elements all listed out as separate items.
This lets you do things in one step that would otherwise require loops, such as your example of re-combining multiple arrays into a single one.
Andrey Misikhin
16,529 PointsAndrey Misikhin
16,529 PointsIt is concatenation of two arrays. For example,
If you will do it, than you will see, that you received a new array, that consists of previous two.
[1, 2, 3, 'a', 'b', 'c']