js代码

function show(fileId){

    $.ajax({
        url:'http://localhost:80/show',
        dataType:'jsonp',
        data:{
            'fileId':fileId
        },
        cache:false,
        jsonp:'callback',
        timeout:5000,
        success: function (data) {
            var data = http://www.mamicode.com/$.parseJSON(data);>

NodeJS 后台代码
var express = require('express');
var logger = require('../common/logger');
var url = require('url');

exports.show = function (req, res, next) {
    var queryObj = url.parse(req.url,true).query;
    res.send(queryObj.callback+'(\'{"message": "展示ID为' +queryObj.fileId+
    '的信息"}\')');
}



NodeJS Ajax请求