微信公众号授权登录

var obj = {}; //url地址参数
var deviceId = “”; //设备id
var visitorId = “”; //手机唯一id
var openId = “”; // 每个人唯一
url(); //获取地址栏后的参数
code(); //初始化页面信息
//获取url地址后的参数
function url() {
//首先获取到当前页面的地址栏信息
var url = window.location.href;
var reg = /?/;
if(url.match(reg)) {
var chars = url.split(’?’)[1];
var arr = chars.split(’&’);
for(var i = 0; i < arr.length; i++) {
var num = arr[i].indexOf("=");
if(num > 0) {
var name = arr[i].substring(0, num);
var value = arr[i].substr(num + 1);
obj[decodeURIComponent(name)] = decodeURIComponent(value);
}
}
}

			}
			
            alert('111')
			////页面授权获取个人信息展示页面
			function code() {
				 alert(JSON.stringify(obj));
				if(obj.code != undefined) {
					deviceId = obj.state
					$.ajax({
						url: 'http:*****************************login',
						type: "post",
						data: {
							code: obj.code,
						},
						dataType: 'json', // 请求方式为json
						xhrFields: {
							withCredentials: true
						},
						/*jsonpCallback: "onBack", */ // 自定义回调函数名
						/*contentType: 'application/json',
						xhrFields:{
							withCredentials:true
						  },
						crossDomain: "true",*/
					    success: function(res) {
							alert(res.code)
						},
						error: function(res) {
							alert("请重新扫码");
							// window.close();
						}
					});
					
				} else {
					window.location.href = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxee36e74647e26a00&redirect_uri=http%3A%2F%2Ffangcang.zhongchuang365.com%2FfangCang%2Findex.html&response_type=code&scope=snsapi_base&state=" + obj.deviceId + "#wechat_redirect";
//					window.location.href = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx5cf1ee7841428150&redirect_uri=http%3a%2f%2f192.168.10.125%3a8020%2fVisitor%2Findex.html&response_type=code&scope=snsapi_base&state=" + obj.deviceId + "#wechat_redirect";
				}
			}