How to return customize group by using underscore js?

Question

I'm calling and binding data using rest api and trying to manage group by functionality using underscore js. But I can't determine how could I do that.

Here is my returned data image:

I'm doing group by on int value that works fine but my expected output is group by 0-1,1-2,2-3 by distance value suppose array is returning distance 0,0.224,0.50,1.22 then output should be in two array 0: 0,0.224,0.50 and 1: 1.22

Thanks.

Answer 1

If I understand you correctly you should use

_.groupBy(data.response.data, function(d) { return Math.floor(d.distance); })

in this case you will get the output that you expect. Check the demo:

var array = [0,0.224,0.50,1.22]

console.log(_.groupBy(array, Math.floor));

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>