failure in using JSON.parse()

Question

Hello,I am creating a windows 8 application using html and javascript. When I try to parse json file(txt) into an array ,it's always failed with the message "0x800a138f - JavaScript runtime error: Unable to get property 'responseText' of undefined or null reference“,what's wrong ?

javascript :

     var subGroupList = new WinJS.Binding.List();

     WinJS.xhr({url:"/data/Groups.txt"}).then(function(jsonxhr){
        var items = JSON.parse(jsonxhr.responseText);
        items.foreach(function (item) {
            subGroupList.push(item);
        });
    });

Groups.txt:

[{"subGroup":"观发识病",
"group":"基础篇",
"htmlFileName":"/data/0101.html",
"subGroupID":"0101",
"groupID":"01"
},
{"subGroup":"视目诊病",
"group":"基础篇",
"htmlFileName":"/data/0102.html",
"subGroupID":"0102",
"groupID":"01
},
{"subGroup":"咳嗽、咳痰",
"group":"内科",
"htmlFileName":"/data/0201.html",
"subGroupID":"0201",
"groupID":"02"
}
]

 

Answer 1

subgroupd, gruoupID: 01 does not close the quotes.

Take a look at http://jsonlint.com/ for json validation

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Answer 2

 now it's ok , thanks