arr sort

1// Sort an array of numbers 
2let numbers = [5, 13, 1, 44, 32, 15, 500]
3
4// Lowest to highest
5let lowestToHighest = numbers.sort((a, b) => a - b);
6//Output: [1,5,13,15,32,44,500]
7
8//Highest to lowest
9let highestToLowest = numbers.sort((a, b) => b-a);
10//Output: [500,44,32,15,13,5,1]
11

1numArray.sort((a, b) => a - b); // For ascending sort
2numArray.sort((a, b) => b - a); // For descending sort
3

1var points = [40, 100, 1, 5, 25, 10];
2points.sort((a,b) => a-b)
3
4

1var items = [
2  { name: 'Edward', value: 21 },
3  { name: 'Sharpe', value: 37 },
4  { name: 'And', value: 45 },
5  { name: 'The', value: -12 },
6  { name: 'Magnetic', value: 13 },
7  { name: 'Zeros', value: 37 }
8];
9
10// sort by value
11items.sort(function (a, b) {
12  return a.value - b.value;
13});
14
15// sort by name
16items.sort(function(a, b) {
17  var nameA = a.name.toUpperCase(); // ignore upper and lowercase
18  var nameB = b.name.toUpperCase(); // ignore upper and lowercase
19  if (nameA < nameB) {
20    return -1;
21  }
22  if (nameA > nameB) {
23    return 1;
24  }
25
26  // names must be equal
27  return 0;
28});

1var test = ['b', 'c', 'd', 'a'];
2var len = test.length;
3var indices = new Array(len);
4for (var i = 0; i < len; ++i) indices[i] = i;
5indices.sort(function (a, b) { return test[a] < test[b] ? -1 : test[a] > test[b] ? 1 : 0; });
6console.log(indices);

1//sort an array of strings
2var fruitSalad = ['cherries', 'apples', 'bananas'];
3fruit.sort(); // ['apples', 'bananas', 'cherries']
4
5//sort an array of numbers
6var scores = [1, 10, 2, 21]; 
7scores.sort(); // [1, 10, 2, 21]
8// Watch out that 10 comes before 2,
9// because '10' comes before '2' in Unicode code point order.
10
11//sorts an array of words
12var randomThings = ['word', 'Word', '1 Word', '2 Words'];
13randomThings.sort(); // ['1 Word', '2 Words', 'Word', 'word']
14// In Unicode, numbers come before upper case letters,
15// which come before lower case letters.