jQuery gets/sets/delete attributes of DOM elements, taking the a element as an example_jquery

jQuery's attribute operations are very simple. The following uses an a element to illustrate the attribute acquisition/setting/deletion operations

Add attributes

$('a').attr('href', 'http://www.jquery.com')

Add multiple attributes

$('a') .attr({'href':'http://www.jquery.com', 'title':'jquery.com'})

Get attributes

$('a' ).attr('href')

class attribute

addClass()

Add a class

hasClass()

Judge Whether there is a class specified in the parameter

removeClass()

Remove a class

toggleClass()

If the class specified in the parameter already exists, If it is deleted, otherwise it will be added.