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This article mainly introduces how to use eq selector and eq() method in jquery, which has certain reference value. Interested friends can refer to it. I hope you will have a lot of harvest after reading this article. Let Xiaobian take you to understand it together.

:eq(index)

Matches an element with a given index value

index: counting from 0

$("ul li:eq(3)") //The index position of the element starts counting at 0, so the 3 here is actually the fourth element

$("ul").find("li").eq(3) //Traverse eq() using jquery

eq(index|-index)

Get the Nth element

index

An integer indicating the zero-based position of an element. The position of the element is zero-based.

-index

An integer indicating the position of an element, counting backwards from the last element in the collection. (counting from 1)

Get the second element of the match

This is just a test.

So is this

$("p").eq(1) or $("p").eq(-1)

Apply: tab tab

if

$('div.tab_box > div')//Select child node

.eq(index).show().siblings().hide();

This way you can achieve tab switching effect,

if $('div.tab_box > div:eq(index)')

.show().siblings().hide()

You can't switch.

Explanation:

: eq() selector to write variables, that is, index is dynamically changing, you need to use + + connection,

That is: $('div.tab_box > div:eq('+index+')')

Note: The quotation marks in front of yes are a pair, and the quotation marks behind them are a pair. It is also possible to use double quotation marks in front of a pair of quotation marks and single quotation marks behind them.

Both methods allow dynamic tab selection.

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