get only the first 20 items in a backbone collection

问题

I'm trying to render only the first 20 items in a backbonejs collection.

If the collection was an array I would do _.first(collection, 20). But since it's not it doesn't work. How do I limit it to 20? Thanks.

回答1:

Backbone collections have underscore methods builtin:

collection.first(20)

来源：https://stackoverflow.com/questions/8240382/get-only-the-first-20-items-in-a-backbone-collection