gistfile1.txt

$.ajax({
    type:"GET",
    url:baseurl,
    beforeSend:function (xhr) {
        var creds = username + ":" + password;
        var basicScheme = btoa(creds);
        var hashStr = "Basic " + basicScheme;
        xhr.setRequestHeader('Authorization', hashStr);
        xhr.setRequestHeader('accept', 'application/json');    
    },
    success:function (data) {
        //success stuff
    }
});