json简单显示问题

Question

我定义了一个json，显示的时候怎么出现undefined呀，我看了其他网友也是这样些的啊，为什么我的不行呢？
[code="java"]
var data={"loginTomes":1,"memberPassword":"test","memberUsertype":"vip","memberId":1,"memberName":"test"};
for(var j=0;j var p=data[j];
alert(p);//出现undefined
var _class=j%2==0?"even":"odd";
_html+=''+p.memberName+''
}

[/code]

Answer 1

data 是json对象,而你这里需要的应该是数组,data数组(多加了一个对象)如下:
var data ==[{"loginTomes":1,"memberPassword":"test","memberUsertype":"vip","memberId":1,"memberName":"test"},{==[{"loginTomes":2,"memberPassword":"pwd","memberUsertype":"normal","memberId":2,"memberName":"yourName"}];

这样alert(p);就不会出现undefined 了