jQuery选择器是否返回HTML元素或jQuery对象的数组?
Q中存储了什么?
What is stored in Q?
Q = $('div');
Q2 = document.getElementsByTagName('div');
我可以使用Q[index]访问每个HTML元素，类似于Q2[index]；这使得Q似乎是HTML元素数组.
I can access each HTML element by using Q[index], similar to Q2[index]; which makes it seem like Q is an array of HTML Elements.
另一方面，我可以做Q.filter()，但是我不能做Q2.filter()；这使得Q似乎是jQuery对象的数组.
On the other hand, I can do Q.filter(), but I cannot do Q2.filter(); which makes it seem like Q is an array of jQuery objects.
还是两者都存在，其中Q是一个包含一堆HTML元素的jQuery对象?如果是这种情况，console.log()不会将Q检测为内部包含对象集合的对象吗? http://jsfiddle.net/rkw79/3s7tw/这个小提琴表明它们是相同的.
Or is it both, where Q is a jQuery object that holds a bunch of HTML elements? If this was the case, wouldn't console.log() detect Q as an object with a collection of objects inside it? This fiddle, http://jsfiddle.net/rkw79/3s7tw/, shows that they are the same.
注意:我知道Q.eq(index)将返回可以使用jQuery方法的对象.我只是想知道Q
Note: I am aware that Q.eq(index) will return an object that can use jQuery methods. I'm just wondering what exactly is Q
结果是一个jQuery对象，其行为类似于使用[]的HTMLElements数组和jQuery的array数组>使用eq(index);
The result is a jQuery object that behaves like both an array of HTMLElements which you get using [] and an array of jQuery objects which you get using eq(index);