AngularJS按属性和自定义过滤器排序

I've seen lots of answers and documentation indicating that you can pass an array of attribute names to Angular's orderBy filter to sort by multiple fields. However, one of my object attributes is a number stored as text (field can be "100", "75", "50", or "<25"). In order to sort these values as numbers, I have been using:I've seen lots of answers and documentation ind