Discussion on: JavaScript: Array Tips and Tricks You Should Know

[Ibeh Ubachukwu]

Number 9 is my favorite.
For number 4 if you want to empty an array declared with var or let I think it better to reassign it with an empty array instead:

var fruits = [“banana”, “apple”, “orange”, “watermelon”, “apple”, “orange”, “grape”, “apple”];

fruits = []; //do this not fruits.length = 0;