Ajax调用总是返回错误

I am trying to use my github api, but it always return error. the same thing is happening for https://api.meetup.com/2/cities also.

I am very new to ajax please help.

$('.btn').click(function(){

  $('.image').text("loading......");
  $.ajax({
    type:"GET",
    url:"https://api.github.com/users/vivekpradhanC",
    success: function(data){
      alert("enter");
      $('.image').text(JSON.stringify(data));
    },
    error: function(xhr, ajaxOptions, thrownError){
      alert(xhr.responseText);
      alert(ajaxOptions);
    },
    datatype:'jsonp',
  });


});

You are requesting a remote URL in ajax, this might not be allowed because of Cross-Origin Resource Sharing policy, you maybe not allowed to access this URL throught Ajax.

Check this article https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS for more info.