If you use jQuery select any of element in Dom, it will return a jQuery object but not a real Array .
.toArray
If you want to manipulate the returned jQuery object, you must use .toArray() to convert it.
$('div').toArray().map( // ... do something).get()
And you can access it with syntax like an Array .
$('div')[1]But it is NOT an Array , jQuery provide .get() to fetch the element with index.
$('div').get(1)And it can receive negative integer.
$('div').get(-1)Let see an unordered list:
<ul>
<li class="foo1">foo1</li>
<li class="foo2">foo2</li>
<li class="foo3">foo3</li>
</ul>Here is the index you can use.
<ul>
<li class="foo1">foo1</li> // get(0) get(-3)
<li class="foo2">foo2</li> // get(1) get(-2)
<li class="foo3">foo3</li> // get(2) get(-1)
</ul>
