Backbone.js：无法使collection.get工作

Question

This is so strange.

I do

console.log(this.collection);

And I can see all my models fine with its IDs attached correctly.

But on the same line, I do

console.log(this.collection.get(1));

And it tells me it's "undefined".

What's going on?

EDIT : Just wondering, does "id" have to be unique? I have some models that have no "ids" and then others have IDs set. Does this matter?

Answer 1

你必须at(1)而不是get(1) ， get()在集合中寻找一个元素，而at()正在查看一个位置。