(function(window,document) { function weather () { this.init() } weather.prototype = { init () { console.log("init"); this.get("http://127.0.0.1:3000/getWeather",{ cityname: '合肥', },function(result) { console.log(result); }) }, get (url,params,callback) { $.ajax({ type: 'GET', url: url, data: params, success: function (res) { callback(res) }, error: function (err) { throw new Error(JSON.stringify(err)) } }) } } window.Weather = weather })(window,document)