JavaScript: array.shift() vs array.unshift()

shift() removes the first array item, and unshift() prepends items to the array. But how to remember which is which?

Mnemonic:

The methods with shorter names remove items.

So, pop() and push():

• pop() has a shorter name than push()
• pop() removes the last array item
• push() appends items to the array.

Similarly, shift() vs unshift():

• shift() has a shorter name than unshift()
• shift() removes the first array item
• unshift() prepends items to the array.