mdn spread
const parts = ['shoulders', 'knees']; const lyrics = ['head', ...parts, 'and', 'toes']; // ["head", "shoulders", "knees", "and", "toes"]
Here is what the above code is Doing:
1. We create an array called parts with two strings in it: “shoulders” and “knees”.
2. We create an array called lyrics with three strings in it: “head”, “and”, “toes”.
3. We then use the spread operator (…) to copy each item from the parts array to the lyrics array.
4. The lyrics array now has five strings in it: “head”, “shoulders”, “knees”, “and”, “toes”.
