标签：word state static char [] doc stat code send
server2.js
var express=require(‘express‘); var expressStatic=require(‘express-static‘); var server=express(); server.listen(63342); //用户数据 var users={ ‘mike‘: ‘123456‘, ‘jack‘: ‘654321‘, ‘luci‘: ‘987987‘ }; server.get(‘/login‘, function (req, res){ var user=req.query[‘user‘]; var pass=req.query[‘pass‘]; if(users[user]==null){ res.send({ok: false, msg: ‘此用户不存在‘}); }else{ if(users[user]!=pass){ res.send({ok: false, msg: ‘密码错误‘}); }else{ res.send({ok: true, msg: ‘成功‘}); } } }); server.use(expressStatic(‘./www‘));
a.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="ajax.js" charset="utf-8"></script>
<script type="text/javascript">
window.onload=function (){
var oUser=document.getElementById(‘user‘);
var oPass=document.getElementById(‘pass‘);
var oBtn=document.getElementById(‘btn1‘);
oBtn.onclick=function (){
ajax({
url: ‘/login‘,
data: {user: oUser.value, pass: oPass.value},
success: function (str){
var json=eval(‘(‘+str+‘)‘);
if(json.ok){
alert(‘登录成功‘);
}else{
alert(‘登录失败：‘+json.msg);
}
},
error: function (){
alert(‘不好意思，失败了‘);
}
});
};
};
</script>
</head>
<body>
用户：<input type="text" id="user" /><br>
密码：<input type="password" id="pass" /><br>
<input type="button" value="登录" id="btn1" />
</body>
</html>
ajax.js
function json2url(json){ var arr=[]; for(var name in json){ arr.push(name+‘=‘+json[name]); } return arr.join(‘&‘); } function ajax(json){ json=json || {}; if(!json.url)return; json.data=json.data || {}; json.type=json.type || ‘get‘; var timer=null; if(window.XMLHttpRequest){ var oAjax=new XMLHttpRequest(); }else{ var oAjax=new ActiveXObject(‘Microsoft.XMLHTTP‘); } switch(json.type){ case ‘get‘: oAjax.open(‘GET‘,json.url+‘?‘+json2url(json.data),true); oAjax.send(); break; case ‘post‘: oAjax.open(‘POST‘,json.url,true); oAjax.setRequestHeader(‘Content-Type‘,‘application/x-www-form-urlencoded‘); oAjax.send(json2url(json.data)); break; } oAjax.onreadystatechange=function(){ if(oAjax.readyState==4){ clearTimeout(timer); if(oAjax.status>=200 && oAjax.status<300 || oAjax.status==304){ json.success && json.success(oAjax.responseText); }else{ json.error && json.error(oAjax.status); } } }; }
截图：
效果：
标签：word state static char [] doc stat code send
原文地址：http://www.cnblogs.com/guangzhou11/p/7795936.html
