Jquery subelement filter selector example _ jquery

The jquery sub-element filter selector is more practical in some special cases. The following describes how to use it. If you are interested, refer The Code is as follows:

: Nth-child ('index value') // gets the position of a child element under a specified element. The index starts from 1;
// Even rows
// $ ('Li: nth-child (even) '). addClass ('class1 ');
// Odd number of rows
// $ ('Li: nth-child (odd) '). addClass ('class1 ');

// The first line
// $ ('Li: nth-child (1) '). addClass ('class1 ');
// $ ('Li: first-child '). addClass ('class1 ');

// Only one child element
$ ('Li: only-child '). addClass ('class1 ');