gistfile1.js

var increment = 1;
var getPosts = function(i){
  url = "posts/" + i + ".html";
  $.ajax({
    url: url, 
    type: "GET",
    success:function(data){
      $('#posts').append("<p class='post'>"+data+"</p>");
      increment++;
      getPosts(increment);
    }
  });
};