JavaScript array push, pop, shift, unshift: how to remember the difference

If you want to add or remove items from the beginning or end of a JavaScript array, you'd use push, pop, shift, or unshift.

But how do you remember which is which?

Here's a handy guide:

Unshift and shift make the whole array shift sideways.

Unshift

Shift

['a', 'b', 'c', 'd', 'e']

Push and pop do NOT make the array shift sideways.

Push

Pop

['a', 'b', 'c', 'd', 'e']

In each of those pairs (push/pop and unshift/shift), the longer word makes the array longer.