Splitting arrays into X elements and “the rest”
When a feature calls for the first five photos from a list and a link that says “27 more photos”, we can split the list of photos into these two blocks.
Read fire tipAccessing object properties with bracket notation
In JavaScript, we can use bracket notation to access an object’s property whose name is stored in a variable.
const storage = {
candy: 5,
chocolate: 6
}
// We can access properties directly by name using dot-notation. We can also
// access them by writing their name as a string in square brackets:
storage.candy // ⇒ 5
storage['candy'] // ⇒ 5
// If we don’t know the name of the property because it only exists in a
// variable, we _have_ to use bracket notation:
const lookUp = 'chocolate'
storage.lookUp // ⇒ undefined (looks for missing property 'lookUp')
storage[lookUp] // ⇒ 6