如何使用node.js返回自GET请求以来的数据

I have a little trouble with an Node application, the problem is: I have an Script in a web site "x" and this script calls a function that is on another server (like analytics), I'm calling the function with ajax and when the function returns the data, happen some curious, when I check the network with Developer Tools in Chrome, the callback shows the response like I wanted in JSON format, but not show me data. My code:I have a little trouble with an Node applicatio