Show all items from json when noc checkbox is checked, and filter elements which don´t have the value or no integer in json

i´m really new in angularjs. I want to program a kind of product catalogue with many filter options. There are checkboxes for some categories, a searchfield, and many range filters.

so i have the problem that i read data from json file and have no idea how to filter when there are no strings that match, rather an integer.

so i want to filter the hole "product" in content. when theres an integer, the product have to be display. when there´s null or no entry, the product should hide.

i hope anyone can help me and i´m sorry for my bad english. it´s been a while :-)