Jquery选择器用于第一个“一，二，三和X”元素和：not（）？

Question

If you want to select the first element or :not, there are several choices:

• :not(:first)
• :nth-child(1)
• first()
• :first-child
• etc...

What are the options for selecting the first 'two, three, and X' elements?

AND

:not(the first two, three, and X?) can the :not() be accomplished by using the JS !

Answer 1

If the elements you want to exclude follow consecutively, you could use slice() :

$(selector).slice(0,3);

JS Fiddle demo .

This will select the first three elements, the 0 is the zero-based index of the first element to start, and the second, the 3 , is the zero-based index of the element at which to stop, collecting.

The second number can also be a negative number and, if so, will count from the end of the returned set of elements:

$(selector).slice(1,-3);

JS Fiddle demo .

References:

• slice() .

Answer 2

There are a few ways:

For just the first 1 or 2 you could specify using eq : $('.class').eq(0);

For a limited range, use lt : $('.class').lt(3);

To perform the "not" of lt , use gt , which is greater-than.