Storing items of an array depending on another value

Question

I have an array called catalogue which holds 4 items:

packageid, dataid , categoryid and datapackage.

What I want to do is push into the array datai

Answer 1

Use the filter function to filter the result and map to get the ids:

var dataids = (
   categoryBtnFilter==0 && packageBtnFilter==0
   ? catalogue
   : catalogue.filter(function(i) {
       return i.categoryid=categoryBtnFilter && i.packageid==packageBtnFilter
   })
).map(function(i){return i.dataid});