jquery将json转为数据字典的实例代码

{
 "userinfo": [
 { "account":"15639864589" , "password":"123456789" , "email":"123456789@qq.com" },
 { "account":"15652689689" , "password":"123456789" , "email":"123456789@qq.com" },
 { "account":"15635456989" , "password":"123456789" , "email":"123456789@qq.com" },
 { "account":"15632145689" , "password":"123456789" , "email":"123456789@qq.com" }
 ]
}

//-----基础信息start
//用户信息字典
var userinfoDic = {};
$.ajax({
 //请求方式为get
 type:"GET",
 //json文件位置
 url:"./json/user.json",
 //返回数据格式为json
 dataType: "json",
 //请求成功完成后要执行的方法
 success: function(data){
 //使用$.each方法遍历返回的数据date
 $.each(data.userinfo,function(i,item){
 //设置根据用户账号密码找用户
 userinfoDic[item.account,item.password] = item;
 });
 }
});
//-----基础信息end

//登录按钮的点击事件
$("#login").bind('click',function(){
 var account = $("#account").val();
 var password = $("#password").val();
 //
 if(account != '' && password != ''){
  if(userinfoDic[account,password]){
  window.location.href = 'index.html';
  }else{
  alert("账号或密码错误!");
  }
 }else{
 alert("账号或密码不能为空!");
 }
  
});