Sort by field
importance: 5
We’ve got an array of objects to sort:
let users = [
{ name: "John", age: 20, surname: "Johnson" },
{ name: "Pete", age: 18, surname: "Peterson" },
{ name: "Ann", age: 19, surname: "Hathaway" }
];The usual way to do that would be:
// by name (Ann, John, Pete)
users.sort((a, b) => a.name > b.name ? 1 : -1);
// by age (Pete, Ann, John)
users.sort((a, b) => a.age > b.age ? 1 : -1);Can we make it even less verbose, like this?
users.sort(byField('name'));
users.sort(byField('age'));So, instead of writing a function, just put byField(fieldName).
Write the function byField that can be used for that.
function byField(fieldName){
return (a, b) => a[fieldName] > b[fieldName] ? 1 : -1;
}