Unable to solve error “ Uncaught SyntaxError: Unexpected token o ”

Question

I am currently practicing using Javascript/Dojo. However, I have an error that I am unable to solve:

Uncaught SyntaxError: Unexpected token o

Answer 1

try :

 alert(data.list[1].Name);

instead of:

 var jsonData = JSON.parse(data);
 alert(jsonData.list[1].Name);

data is already a javascript object not a string

Answer 2

That's because you are parsing a plain object, and not a string, as expected. In this case you just have to:

alert(jsonData.list[1].Name);

In this case, to use the JSON.parse method you should've been using this string:

var stringifiedJson = var data = "{"+
    "\"list\": {"+
        "\"1\": {"+
            "\"Relevance\": \"Low\","+
            "\"id\": 1,"+
            "\"Name\": \"Inorganic\""+
        "},"+
        "\"2\": {"+
            "\"Relevance\": \"Low\","+
            "\"id\": 2,"+
            "\"Name\": \"Mobile\""+
        "}"+
    "}"+
"}";

var jsonData = JSON.parse(stringifiedJson);
alert(jsonData.list[1].Name);

I recommend you to take a look at this MDN article about native JSON

Answer 3

Error is once declared as datatype json, it parses for you.

so : it would be something like this

<span style="text-decoration:line-through;">var obj = JSON.parser(data)</span>

 success: function(data){

  var obj = JSON.parser(data)

  alert(obj.data)

}

Answer 4

You're trying to parse a JavaScript object. JSON.parse is for parsing a JSON string representing a JavaScript-like object.

Just skip the parsing altogether:

alert(data.list[1].Name);

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On a related note: you might be interested in reading There's no such thing as a "JSON Object".