json_encode输出后，为什么会输出undefined

[hzhsky1985]

a.php
<?php
$arr = array(
'userinfo_base_name' =>$model['userinfo_base_name'],
'userinfo_base_sex' => $model['userinfo_base_sex'],
'userinfo_base_city' =>$model['userinfo_base_name'],
'userinfo_base_bir' => $model['userinfo_base_sex'],
'userinfo_base_introduction' => $model['userinfo_base_introduction']
);
$json_string = json_encode($arr);
echo $json_string;
?>

<script>
var url="a.php";
dojo.xhrGet({
url: url,
handleAs: "text",
encoding: "utf-8",
load: function(responseText)
{
var json =responseText;
alert(json.userinfo_base_name);
},
error: function(response)
{
alert("失败");
}
});
</script>

responseText输出：{"userinfo_base_name":"\u591c\u795e","userinfo_base_sex":"\u7537","userinfo_base_city":"\u591c\u795e","userinfo_base_bir":"\u7537","userinfo_base_introduction":"good"}

json.userinfo_base_name输出undefined，为什么呢？这句josn文本我验证过没有问题啊

[tony-杨]

handleAs: "text", 修改为json看看

[tony-杨]

或者在load: function(responseText)中加一句eval("var json = responseText;");

[hzhsky1985]

很遗憾，都不可以啊

[江南昆虫]

eval("var json = "+responseText+";");

[程序猿之殇]

handleAs: "text",
你调用返回的字符串,需要转换为json才可以使用.
var myObject = eval('(' + responseText + ')');


或者直接查看一下dodo如何将接收结果改为json．

[程序猿之殇]

var json = eval('(' + responseText + ')');