Soniya Mohan Soniya Mohan - 4 months ago 218
AngularJS Question

SyntaxError: Unexpected token o in JSON at position 1

I parse few data using a type class in my controller I'm getting data as follows:

{
"data":{
"userList":[
{
"id":1,
"name":"soni"
}
]
},
"status":200,
"config":{
"method":"POST",
"transformRequest":[
null
],
"transformResponse":[
null
],
"url":"/home/main/module/userlist",
"headers":{
"rt":"ajax",
"Tenant":"Id:null",
"Access-Handler":"Authorization:null",
"Accept":"application/json, text/plain, */*"
}
},
"statusText":"OK"
}


I tried to store the data like this

var userData = _data;
var newData = JSON.parse(userData).data.userList;


How can I extract the user list to a new variable?

Answer

The JSON you posted looks fine, however in your code, it is most likely not a JSON string anymore, but already a JavaScript object. This means, no more parsing is necessary.

You can test this yourself, e.g. in Chrome's console:

new Object().toString()
// "[object Object]"

JSON.parse(new Object())
// Uncaught SyntaxError: Unexpected token o in JSON at position 1

JSON.parse("[object Object]")
// Uncaught SyntaxError: Unexpected token o in JSON at position 1

JSON.parse() converts the input into a string. The toString() method of JavaScript objects by default returns [object Object], resulting in the observed behavior.

Try the following instead:

var newData = userData.data.userList;