原生js 完整封装ajax

最近开始看了看跟Node相关的内容，联想到了前后台的交互，于是记录一下自己封装的ajax，初学者，写的糙，望见谅~~function ajax(json){ if(window.XMLHttpRequest){ var ajax = new XMLHttpRequest(); } else{ var ajax = new ActiveXObject( “Microsoft.XMLHTTP” ); } if(json.type==‘get’){ ajax.open(‘get’,json.url+’?’+JsonToString(json.data),true); ajax.send(); } else if(json.type==‘post’){ ajax.open(‘post’,json.url,true); ajax.setRequestHeader(“Content-Type”,“application/x-www-form-urlencoded”); ajax.send(JsonToString(json.data)); } ajax.onreadystatechange = function(){ if(ajax.readyState == 4){ if(ajax.status>=200 && ajax.status<300 || ajax.status == 304){ json.success(ajax.responseText); } else{ json.error && json.error(); } }; }; function JsonToString(json){ var arr = []; for(var i in json){ arr.push(i+’=’+json[i]); }; return arr.join(’&’); }}验证btn.onclick = function(){ ajax({ ‘url’:‘http://localhost:9102’, ’type’:‘get’, ‘data’:{ user:user.value, pass:pass.value }, success:function(data){ console.log(data) } })}btn.onclick = function(){ ajax({ ‘url’:‘http://localhost:9102’, ’type’:‘post’, ‘data’:{ user:user.value, pass:pass.value }, success:function(data){ console.log(data) } })}后台内容var http = require(‘http’);urlLib = require(‘url’),var querystring = require(‘querystring’);http.createServer(function(req,res){ res.setHeader(‘Access-Control-Allow-Origin’,’*’);//允许跨域 //get var json = urlLib.parse(req.url,true).query; //post var str = ‘’; req.on(‘data’,function(data){ str += data; }); req.on(’end’,function(){ var json = querystring.parse(str); res.end(); });}).listen(9102);