Answers for "sort array of dictionaries by key javascript"

sort a dictionary by value in javascript

const books = [
  {id: 1, name: 'The Lord of the Rings'},
  {id: 2, name: 'A Tale of Two Cities'},
  {id: 3, name: 'Don Quixote'},
  {id: 4, name: 'The Hobbit'}
]

compareObjects(object1, object2, key) {
  const obj1 = object1[key].toUpperCase()
  const obj2 = object2[key].toUpperCase()

  if (obj1 < obj2) {
    return -1
  }
  if (obj1 > obj2) {
    return 1
  }
  return 0
}

books.sort((book1, book2) => {
  return compareObjects(book1, book2, 'name')
})

sort object dictionary javscript

var dict = {
  "x": 1,
  "y": 6,
  "z": 9,
  "a": 5,
  "b": 7,
  "c": 11,
  "d": 17,
  "t": 3
};

// Create items array
var items = Object.keys(dict).map(function(key) {
  return [key, dict[key]];
});

// Sort the array based on the second element
items.sort(function(first, second) {
  return second[1] - first[1];
});

// Create a new array with only the first 5 items
console.log(items.slice(0, 5));