User JQuery with the Tumblr API & JSONP

ajax_jsonp.js

$.ajax(
  'http://api.tumblr.com/v2/blog/codingjester.tumblr.com/posts?api_key=<your_key>',
  {
    dataType: 'jsonp',
    success: function (d) {
      console.log(d); // On success log the data to the console   
    },
  }
);

// More explicit information
$.ajax('https://api.tumblr.com/v2/blog/codingjester.tumblr.com/posts', 
  {
    dataType:'jsonp', 
    data: { 
        limit : 1, 
        api_key : 'your_key'
    }, 
    success: function(d) { 
        console.log(d); 
    }
  }
);

Thank you! This is my adaption: Why is this not working? I want to randomly call one tag (or even better a tagged photo on tumblr) and give an offset:

$.ajax(
api_key: "",
{
dataType: 'jsonp',
success: function (data) {
console.log(data); // On success log the data to the console
},
limit: 1,
offset: Math.round(Math.random() * moods[mood].total)
}
);