Basic filter selector for jquery selector _ jquery

This article mainly introduces the basic filter selector of jquery selector. If you need a friend, please refer to it and hope to help you. The Code is as follows:

The Code is as follows:

Provincial/Municipal Administrative Divisions

Beijing	Shanghai	Shangqiu
Haidian District	Xuhui District	Fuyang
Chaoyang	Zhabei District	Liangyuan
Changping	Huangpu District	Zhangye City

I.: first

The Code is as follows:

$ ("Tr: first"). addClass ("highlight"); // obtain the first matching tr element.

Ii.: last ()

The Code is as follows:

$ ("Tr: last"). addClass ("highlight"); // obtain the last matching tr element.

3. not (selector)

The Code is as follows:

$ ("Td: not (: even)"). addClass ("highlight"); // get the td except that the index is an even number.

Iv. even

The Code is as follows:

$ ("Tr: even"). addClass ("highlight"); // matches all elements whose index values are even and starts counting from 0.

V. odd

The Code is as follows:

$ ("Tr: odd"). addClass ("highlight"); // matches all elements with odd index values and starts counting from 0.

Vi. eq (index)

The Code is as follows:

$ ("Tr: eq (2)"). addClass ("highlight"); // matches the element of a given index value

VII.: gt (index)

The Code is as follows:

$ ("Tr: gt (1)"). addClass ("highlight"); // match all elements greater than the given index value

8.: lt (index)

The Code is as follows:

$ ("Tr: lt (2)"). addClass ("highlight"); // match all elements smaller than the given index value

9. header

The Code is as follows:

$ (": Header"). addClass ("highlight"); // matches title elements such as h1, h2, and h3.