organizing items in array by first key value pair

Question

i am trying to organize the index of objects in an array by their first key/value

i have an array objects that are not organized like they should be.

they have to be in order an so I can appropriately add their timers. you can see below they are unorganized and the timers are messed up.

I tried adding object keys but it complicated everything. thanks

var myObject = 
[ 
  { stepNumber: 2,
    sendTimeFromNow: 259200000 },
  { stepNumber: 1,    
    sendTimeFromNow: 259200000 }
]

If it's just a literal, rewrite the order so that it works. If it's dynamically constructed, show us the code that does that. — Bergi, Feb 14 '17 at 04:08
Have you tried `myObject.sort(appropriateComparisonFunction)`? — Bergi, Feb 14 '17 at 04:09
Just curious, did you try researching this before posting the question? — Ryan Wheale, Feb 14 '17 at 04:10
You might want to take a look into this http://stackoverflow.com/questions/1129216/sort-array-of-objects-by-string-property-value-in-javascript — RaR, Feb 14 '17 at 04:10

score 0 · Accepted Answer · answered Feb 14 '17 at 04:09

0

Basic array sorting should work.

myObject.sort((a, b) => {
    return a < b ? -1 : a > b ? 1 : 0;
});

In your case you will need to compare properties on a and b:

myObject.sort((a, b) => {
    return a.stepNumber < b.stepNumber ? -1 : a.stepNumber > b.stepNumber ? 1 : 0;
});

answered Feb 14 '17 at 04:09

Ryan Wheale

26,022
8
76
96

this works great! thnks – Bill Hanery Feb 14 '17 at 04:26

score 0 · Answer 2 · answered Feb 14 '17 at 04:19

0

Use sort.

Order by stepNumber (alternate a and b for ascending or descending order)

myObject.sort((a, b) => a.stepNumber - b.stepNumber)

answered Feb 14 '17 at 04:19

mallendeo

1,507
1
9
13

score -1 · Answer 3 · answered Feb 14 '17 at 04:10

-1

You can use Array.sort. Here is an example of it in action:

myObject.sort(function(a, b){
    var setNumberA = 123, //some number
        setNumberB = 4567; //some other number
    // Then just compare the 2 dates
    if(setNumberA < setNumberB) return -1;
    if(setNumberA > setNumberB) return 1;
    return 0;
});

Hope this helps!

answered Feb 14 '17 at 04:10

zoecarver

5,523
2
26
56

thanks zoe - helpful but not as much as ryans ;) – Bill Hanery Feb 14 '17 at 04:27
But does it deserve a down vote? – zoecarver Feb 14 '17 at 04:34

organizing items in array by first key value pair

3 Answers3