javascript sort array of objects by key value ascending and descending order

1var array = [
2  {name: "John", age: 34},
3  {name: "Peter", age: 54},
4  {name: "Jake", age: 25}
5];
6
7array.sort(function(a, b) {
8  return a.age - b.age;
9}); // Sort youngest first

1const books = [
2  {id: 1, name: 'The Lord of the Rings'},
3  {id: 2, name: 'A Tale of Two Cities'},
4  {id: 3, name: 'Don Quixote'},
5  {id: 4, name: 'The Hobbit'}
6]
7
8compareObjects(object1, object2, key) {
9  const obj1 = object1[key].toUpperCase()
10  const obj2 = object2[key].toUpperCase()
11
12  if (obj1 < obj2) {
13    return -1
14  }
15  if (obj1 > obj2) {
16    return 1
17  }
18  return 0
19}
20
21books.sort((book1, book2) => {
22  return compareObjects(book1, book2, 'name')
23})
24
25// Result:
26// {id: 2, name: 'A Tale of Two Cities'}
27// {id: 3, name: 'Don Quixote'}
28// {id: 4, name: 'The Hobbit'}
29// {id: 1, name: 'The Lord of the Rings'}

1homes.sort((a, b) => parseFloat(a.price) - parseFloat(b.price));
2

1 function compareValues(key, order = 'asc') {
2  return function innerSort(a, b) {
3    if (!a.hasOwnProperty(key) || !b.hasOwnProperty(key)) {
4      // property doesn't exist on either object
5      return 0;
6    }
7
8    const varA = (typeof a[key] === 'string')
9      ? a[key].toUpperCase() : a[key];
10    const varB = (typeof b[key] === 'string')
11      ? b[key].toUpperCase() : b[key];
12
13    let comparison = 0;
14    if (varA > varB) {
15      comparison = 1;
16    } else if (varA < varB) {
17      comparison = -1;
18    }
19    return (
20      (order === 'desc') ? (comparison * -1) : comparison
21    );
22  };
23}

1javascript sort object by value descending
2
3
4starWarsPeople.map(e=>{
5    return e
6  }).sort((a,b)=>{
7    if (a.height-b.height>1) {return -1;}
8    else if (a.height-b.height<1) {return 1;}
9    else {return 0;}
10  });
11