Array.sort() - Sorting Arrays in JavaScript

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javascript/Array-sort.md
Jan 19, 2017
JavaScript
#Array Methods

The method for sorting arrays is called.. sort!.

Examples

Default sort

var fruit = ['cherries', 'apples', 'bananas'];
fruit.sort(); // ['apples', 'bananas', 'cherries']

var scores = [1, 10, 21, 2]; 
scores.sort(); // [1, 10, 2, 21]
// Watch out that 10 comes before 2,
// because '10' comes before '2' in Unicode code point order.

var things = ['word', 'Word', '1 Word', '2 Words'];
things.sort(); // ['1 Word', '2 Words', 'Word', 'word']
// In Unicode, numbers come before upper case letters,
// which come before lower case letters.

Notes

  • Sorts elements in place
  • The default sort order is according to string Unicode code points
  • You can use sort to sort both objects and arrays (because: arrays are objects..)
  • If you are passing object properties as parameters to your (separately defined) sort function, use bracket notation to access the parameter (variable). obj[param] instead of obj.param or obj['param'].
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