An element's attributes can contain useful information for your application, so it's important to be able to get and set them.

The .attr() method

The .attr() method acts as both a getter and a setter. As a setter, .attr() can accept either a key and a value, or an object containing one or more key/value pairs.

.attr() as a setter:

$( "a" ).attr( "href", "allMyHrefsAreTheSameNow.html" );
 
$( "a" ).attr({
    title: "all titles are the same too!",
    href: "somethingNew.html"
});

.attr() as a getter

"a" ).attr( "href" ); // Returns the href for the first a element in the document