我需要一些帮助来理解 pushStack
I need some help to understand pushStack
这里我做了一个例子,使用与否的结果是一样的http://jsfiddle.net/Bz5n9/2/ 所以我想我真的不明白它的用途.
Here I've made an example where the results using it or not are the same http://jsfiddle.net/Bz5n9/2/ so I think i really didn't get what is it for.
谢谢!
您当前正在添加到集合中,将一个新集合推送到堆栈上,该集合已经是结果(您可以只返回 this.添加()
).它所做的不是将 .b
元素作为新元素推送到堆栈上,而是推送带有 .b
元素 和 的新集合#2
<li>
你开始用的.
You're currently adding to the collection, pushing a new collection on the stack that's already the result (you could just return the result of this.add()
). What this does is instead of pushing .b
elements on the stack as a new element, it pushes a new set with .b
elements and the #2
<li>
you started with.
相反,您应该直接传递元素(没有 .add()
调用),像这样:
Instead, you instead should pass the elements directly (no .add()
call), like this:
return this.pushStack(newCollection, "agregate", "");
你可以在这里测试一下.
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