Menu
I have an array of JavaScript objects:
var objs = [ { first_nom: 'Lazslo', last_nom: 'Jamf' }, { first_nom: 'Pig', last_nom: 'Bodine' }, { first_nom: 'Pirate', last_nom: 'Prentice' } ]; How can I sort them by the value of last_nom in JavaScript?
I know about sort(a,b), but that only seems to work on strings and numbers. Do I need to add a toString() method to my objects?
435
To sort an array of objects, use the sort() method with a compare function. A compareFunction applies rules to sort arrays by defined our own logic. They allow us to sort arrays of objects by strings, integers, dates, or any other custom property.
const arr1 = ['d','a','b','c'] ; const arr2 = [{a:1},{c:3},{d:4},{b:2}]; We are required to write a JavaScript function that accepts these two arrays. The function should sort the second array according to the elements of the first array.
Sort an Array of Objects in JavaScriptTo sort an array of objects, you use the sort() method and provide a comparison function that determines the order of objects.
It's easy enough to write your own comparison function:
function compare( a, b ) { if ( a.last_nom < b.last_nom ){ return -1; } if ( a.last_nom > b.last_nom ){ return 1; } return 0; } objs.sort( compare ); Or inline (c/o Marco Demaio):
objs.sort((a,b) => (a.last_nom > b.last_nom) ? 1 : ((b.last_nom > a.last_nom) ? -1 : 0)) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
