jQuery - attr()

The attr() also gets or sets an html attribute on a DOM Element.

Get Attribute

Set Attribute

Change href and title

W3Schools.com

$(document).ready(function ()
{
    $("#btnGet").click(function ()
    {
        var cssClass = $("#demo1").attr("class");
        $("#demo1").html("The current class of this text is " + cssClass + ".");
    });

    $("#btnSet").click(function ()
    {
        $("#demo1").attr("class", "text-info")
        $("#demo1").html("Setting the css class to text-info....");
    });

    $("#btnTest").click(function ()
    {
        $("#w3s").attr({
            "href": "http://www.w3schools.com/jquery",
            "title": "W3Schools jQuery Tutorial",
            "class": "btn btn-danger"
        });

    });
});