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Joachim Lohse
2,829 PointsLoop through js object (e.g. points) like an array
Hi there,
What we do, we let our code return the points for a specific language (e.g. profile.points.JavaScript). And it works well.
In case we have a long list and we want to sum up to a total, what is the easiest way to do it?
Can we just save the object to an array and then loop through it? Or is there a proper way to do it? I found some infos with jQuery, but couldn't make it work. Then I tried this:
var arr = Object.keys(points).map(function (key) { console.log (points[key]); });
It works ok. But an array would be easier...
Thanks :) Jo
regards this course: https://teamtreehouse.com/library/capturing-command-line-arguments
2 Answers
Steven Parker
243,318 PointsThe result of calling Object.keys is an array. That's why you are able to use "map" (which is an array method) on it.
Joachim Lohse
2,829 PointsHi Steven, Thanks! true. I can use "keys()" to get an array. The second step would be to loop through. something like this:
var array = Object.keys(points) //returns the languages e.g. swift, JavaScript,.. for (var i =0, i<array.length, i += 1){ https://teamtree.......json/usename.${array[i]}; ....
I think it should work.
Thanks. Jo
Steven Parker
243,318 PointsSure, you could use a loop to do that. But this might be a good time to use "reduce". (And I don't understand why part of the code snippet looks like a URL)