When an object property and its value come from a variable with the same name, you can write that name once: `{ count }` is equivalent to `{ count: count }`. This shorthand works alongside ordinary properties and methods in an object literal. section 12.1
Updating an object
Destructure `count` from the current state, change it, then pass it back as `{ count }`. The same shorthand works for nested properties such as `{ lat, lng }`. section 12.1 section 12.1
Listing 12.1. Mixing shorthand and longhand object literals
const lat = 33.762909;
const lng = -84.422675;
const accuracy = 1200.4;
const shorthand = {
name: 'Atlanta',
accuracy,
location: {
lat,
lng
}
};
const longhand = {
name: 'Atlanta',
accuracy: accuracy,
location: {
lat: lat,
lng: lng
}
}
Compare equivalent object literals: the shorthand form uses `accuracy`, `lat`, and `lng` without repeating them after colons. section 12.1
