並べ替え（JS）

➀ageで並べ替え

const user = [
	{ name: "a", age: 21 }, 
	{ name: "b", age: 30 },
	{ name: "c", age: 19 }
]

const result = user.sort((a, b) => {
	return (a.age < b.age) ? -1 : 1  //昇順
})

console.log(result)

[{ name: "c", age: 19 },
 { name: "a", age: 21 }, 
 { name: "b", age: 30 }]

➁ageで並べ替え

const user = {
	0: { name: "a", age: 21 }, 
	1: { name: "b", age: 30 },
	2: { name: "c", age: 19 }
}

const result = Object.keys(user).map((key) => {
	return user[key]
}).sort((a, b) => {
	return (a.age < b.age) ? -1 : 1  //昇順
})

console.log(result)

[{ name: "c", age: 19 },
 { name: "a", age: 21 }, 
 { name: "b", age: 30 }]