Sort by 2 variables prioritizng 1


Sort by 2 variables prioritizng 1



I have a list of posts. These posts have a date (created) and a score (score). What I would like to do is sort them by created and score but having score as the more important variable..


posts


created


score


created


score


score



In other words sort all posts in order of created but having the highest score show first..


created


score



So essentially:


score: 6, created: july 1 //created is actually a timestamp 1530372915676
score: 4, created: july 1
score: 2, created: july 1
score: 1, created: july 1
score: 5, created: june 30
score: 3, created: june 30



I found this piece of code:


array.sort(function (x, y) { return x.created - y.created || x.score - y.score; });



but it doesn't seem to work..



What would the best way of doing this be?





There seems to be a contradiction in your question. You say that score should be "the most important variable", but your example shows that the most important variable is created. Is the example the result that you get with your current code, or the result that you want?
– ConnorsFan
Jul 1 at 16:46


score


created




2 Answers
2



This could satisfy your requirement. It will first sort by created in descending order, and within each created item, it will sort by score in descending(highest score first). Similar to sql query order by created desc, score desc


created


descending


created


score


descending(highest score first)


order by created desc, score desc


arr.sort(function (x, y) {
if(x.created != y.created)
{
return y.created - x.created
}
else return y.score-x.score
});



EDIT :
This should work too, without using if


if


arr.sort(function (x, y) { return y.created - x.created || y.score - x.score; });





Will the result be different from the original code?
– ConnorsFan
Jul 1 at 16:51





OP is showing the example of the result they want. So this should work.
– Amit Chigadani
Jul 1 at 16:55





It should now work, yes. Why use the if? You could keep the || operator.
– ConnorsFan
Jul 1 at 17:01


if


||





Yes, that indeed works. Thanks!
– Amit Chigadani
Jul 1 at 17:07



Just swap x and y in the score comparison. It will make higher score go first in cases when the created date is the same:


x


y


array.sort(function (x, y) { return x.created - y.created || y.score - x.score; });






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