Usage and comparison of Jquery:eq selector and EQ () methods

: EQ (Index)

An element that matches a given index value

Index: Counting starting from 0

$ ("UL Li:eq (3)")//element of index position 0 starts counting, so here's 3 actually for the 4th element

$ ("ul"). Find ("Li"). EQ (3) //Using jquery Traversal method eq ()

EQ (index|-index)

get the first n Elements

Index

An integer that indicates the position of the element based on 0, and the position of the element is calculated from 0.

-index

An integer that indicates the position of the element, starting from the last element in the collection. (1 count)

Gets the second element of a match

<p> this was just a test.</p> <p> so is this</p>

$ ("P"). EQ (1) or $ ("P"). EQ (-1)

Apps:tab tab

If

$ (' Div.tab_box > div ')//Select child nodes

. EQ (index). Show (). siblings (). Hide ();

This will enable the tab switch effect,

if $ (' Div.tab_box > Div:eq (Index) ')

. Show (). siblings (). Hide ()

You can't switch.

Explain:

:eq () selector to write variable, that is, index is dynamic change, you need to use + + connection,

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

Note: The preceding quotation marks are a pair, the following quotation marks are a pair, or you can precede a pair of quotation marks with double quotes, followed by single quotes.

both of these methods enable the Dynamic Selection tab tab.

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Usage and comparison of Jquery:eq selector and EQ () methods