"Unexpected token o" when using $.parseJSON [duplicate] - javascript

This question already has answers here:
JSON+Node.js - Unexpected token o
(2 answers)
How can I access and process nested objects, arrays, or JSON?
(31 answers)
Closed 9 years ago.
The following ajax call gives the following result:
$.ajax({
type: "POST",
url: //**My full URL goes here**,
data: {sources: sources},
dataType: "json",
success: function(data) {
alert(data);
alert(data.length);
for (var i = 0; i < data.length; i++)
{
alert(data[i]);
}
}
});
Result:
data:
[objject object],[objject object],[objject object]
length:
3
in loop:
[objject object]
[objject object]
[objject object]
and the following code , in which I just added:
var data = $.parseJSON(data);
$.ajax({
type: "POST",
url: //**My full URL goes here**,
data: {sources: sources},
dataType: "json",
success: function(data) {
var data = $.parseJSON(data);
alert(data);
alert(data.length);
for (var i = 0; i < data.length; i++)
{
alert(data[i]);
}
}
});
The above code gives me the following error:
Uncaught Syntax Error: Unexpected token o
Why is that? Am I doing something wrong? How can I fix it?


The data is already a parsed object since you are passing dataType: 'json', so there is no need to parse it again.
Again to debug and inspect the value of data, use console logging instead of alert(), like console.log(data)


Stop use alert to debug, use console.log instead.
success: function(data) {
// in the browser console, you will see the data structure.
// then do what you want
console.log(data);
// ...

Related

How to parse this JSON result in Javascript?

I am trying to read this JSON that I get as a result of an AJAX get function. I seem to successfully get the data since when I console.log(result) I get the data in the console but I cannot seem to handle this result as a JSON object.
var isbnURL = "https://openlibrary.org/api/books?jscmd=data&format=json&bibkeys=ISBN:9780739332122"
$.ajax({
type: 'GET',
url: isbnURL,
dataType: 'json',
success: function(result){
console.log(result);
console.log(result.length);
},
error: function(message){
console.log(message);
}
});
I am expecting that console.log(result.length); returns the length and not undefined in the console.

The result of this is an object, not an array. Maybe you want to get, for example, the list of links inside the object. In this case you can do that:
result["ISBN:9780739332122"].links.length

var isbnURL = "https://openlibrary.org/api/books?jscmd=data&format=json&bibkeys=ISBN:9780739332122";
var isbnURL = "https://openlibrary.org/api/books?jscmd=data&format=json&bibkeys=ISBN:9780739332122";
$.getJSON({
url: isbnURL,
success: function(data) {
$.each(data, function(index, value) {
console.log("Small cover: " + value.cover.small);
console.log("Title: " + value.title)
});
}
});
This works. getJSON obtains the JSON and parses it, then the each function loops through each book.

Display returned JSON [duplicate]

This question already has answers here:
How can I access and process nested objects, arrays, or JSON?
(31 answers)
Closed 6 years ago.
Im having an issue being able to access the returned object and getting it to display. It is cross domain so I am using jsonp, but can't seem to access the returned object and I don't know why.
$(function(){
var API = "https://ratesjson.fxcm.com/DataDisplayer";
$.ajax({
url: API,
dataType: 'jsonp',
crossDomain: true,
success:function( msg ) {
var Symbol = msg.Rates.Symbol;
console.log("Symbol: " +Symbol);
}
});
});
The data looks like this, and I have no control over how it is formatted or returned:
jQuery1102016139126126654446_1458048453204({"Rates":[{"Symbol":"EURAUD","Bid":"1.48741","Ask":"1.48751","Spread":"1.00","ProductType":"1",},{"Symbol":"Copper","Bid":"2.23","Ask":"2.2325","Spread":"2.50","ProductType":"2",},{"Symbol":"AUDNZD","Bid":"1.12279","Ask":"1.12295","Spread":"1.60","ProductType":"1",},{"Symbol":"EURSEK","Bid":"9.2382","Ask":"9.23974","Spread":"15.40","ProductType":"1",},{"Symbol":"CADJPY","Bid":"84.603","Ask":"84.609","Spread":"0.60","ProductType":"1",},{"Symbol":"USDCHF","Bid":"0.98628","Ask":"0.98632","Spread":"0.40","ProductType":"1",},{"Symbol":"USDCNH","Bid":"6.50553","Ask":"6.50581","Spread":"2.80","ProductType":"1",},{"Symbol":"XAGUSD","Bid":"15.222","Ask":"15.263","Spread":"4.10","ProductType":"5",},{"Symbol":"US30","Bid":"17134.00","Ask":"17136.00","Spread":"2.00","ProductType":"2",},{"Symbol":"USDSEK","Bid":"8.316","Ask":"8.31711","Spread":"11.10","ProductType":"1",},{"Symbol":"AUDCHF","Bid":"0.73659","Ask":"0.73664","Spread":"0.50","ProductType":"1",},{"Symbol":"GER30","Bid":"9921.00","Ask":"9922.00","Spread":"1.00","ProductType":"2",},{"Symbol":"USOil","Bid":"36.61","Ask":"36.66","Spread":"5.00","ProductType":"3",},{"Symbol":"GBPNZD","Bid":"2.13329","Ask":"2.13358","Spread":"2.90","ProductType":"1",},{"Symbol":"EURCAD","Bid":"1.48262","Ask":"1.48272","Spread":"1.00","ProductType":"1",},{"Symbol":"EURUSD","Bid":"1.11089","Ask":"1.1109","Spread":"0.10","ProductType":"1",},{"Symbol":"XPTUSD","Bid":"956.60","Ask":"959.70","Spread":"31.00","ProductType":"5",},{"Symbol":"EURJPY","Bid":"125.441","Ask":"125.449","Spread":"0.80","ProductType":"1",},{"Symbol":"AUS200","Bid":"5089.00","Ask":"5091.00","Spread":"2.00","ProductType":"2",},{"Symbol":"EURGBP","Bid":"0.78286","Ask":"0.7829","Spread":"0.40","ProductType":"1",},{"Symbol":"USDCAD","Bid":"1.33461","Ask":"1.33471","Spread":"1.00","ProductType":"1",},{"Symbol":"EURNOK","Bid":"9.48035","Ask":"9.48285","Spread":"25.00","ProductType":"1",},{"Symbol":"GBPCHF","Bid":"1.39949","Ask":"1.39961","Spread":"1.20","ProductType":"1",},{"Symbol":"GBPAUD","Bid":"1.89993","Ask":"1.90006","Spread":"1.30","ProductType":"1",},{"Symbol":"USDJPY","Bid":"112.919","Ask":"112.923","Spread":"0.40","ProductType":"1",},{"Symbol":"USDNOK","Bid":"8.5339","Ask":"8.5353","Spread":"14.00","ProductType":"1",},{"Symbol":"AUDCAD","Bid":"0.99675","Ask":"0.99684","Spread":"0.90","ProductType":"1",},{"Symbol":"ITA40","Bid":"18746.00","Ask":"18766.00","Spread":"20.00","ProductType":"2",},{"Symbol":"FRA40","Bid":"4458.50","Ask":"4459.50","Spread":"1.00","ProductType":"2",},{"Symbol":"AUDUSD","Bid":"0.74683","Ask":"0.74686","Spread":"0.30","ProductType":"1",},{"Symbol":"USDHKD","Bid":"7.75917","Ask":"7.75948","Spread":"3.10","ProductType":"1",},{"Symbol":"NZDCHF","Bid":"0.65595","Ask":"0.65607","Spread":"1.20","ProductType":"1",},{"Symbol":"EURTRY","Bid":"3.21593","Ask":"3.21737","Spread":"14.40","ProductType":"1",},{"Symbol":"AUDJPY","Bid":"84.333","Ask":"84.339","Spread":"0.60","ProductType":"1",},{"Symbol":"USDZAR","Bid":"15.90479","Ask":"15.9158","Spread":"110.10","ProductType":"1",},{"Symbol":"Bund","Bid":"161.49","Ask":"161.52","Spread":"3.00","ProductType":"4",},{"Symbol":"USDMXN","Bid":"17.88412","Ask":"17.88669","Spread":"25.70","ProductType":"1",},{"Symbol":"USDTRY","Bid":"2.8947","Ask":"2.89508","Spread":"3.80","ProductType":"1",},{"Symbol":"USDOLLAR","Bid":"12022.00","Ask":"12024.00","Spread":"2.00","ProductType":"7",},{"Symbol":"JPN225","Bid":"16926.50","Ask":"16936.50","Spread":"10.00","ProductType":"2",},{"Symbol":"HKG33","Bid":"20290.00","Ask":"20300.00","Spread":"10.00","ProductType":"2",},{"Symbol":"UK100","Bid":"6136.00","Ask":"6137.00","Spread":"1.00","ProductType":"2",},{"Symbol":"CADCHF","Bid":"0.73895","Ask":"0.73904","Spread":"0.90","ProductType":"1",},{"Symbol":"NAS100","Bid":"4353.00","Ask":"4354.00","Spread":"1.00","ProductType":"2",},{"Symbol":"ZARJPY","Bid":"7.097","Ask":"7.10","Spread":"0.30","ProductType":"1",},{"Symbol":"GBPCAD","Bid":"1.89381","Ask":"1.894","Spread":"1.90","ProductType":"1",},{"Symbol":"NGAS","Bid":"1.8745","Ask":"1.8845","Spread":"10.00","ProductType":"3",},{"Symbol":"ESP35","Bid":"8995.00","Ask":"9003.00","Spread":"8.00","ProductType":"2",},{"Symbol":"GBPUSD","Bid":"1.41899","Ask":"1.41906","Spread":"0.70","ProductType":"1",},{"Symbol":"SPX500","Bid":"2007.63","Ask":"2008.13","Spread":"5.00","ProductType":"2",},{"Symbol":"GBPJPY","Bid":"160.231","Ask":"160.244","Spread":"1.30","ProductType":"1",},{"Symbol":"XPDUSD","Bid":"561.70","Ask":"564.70","Spread":"30.00","ProductType":"5",},{"Symbol":"EUSTX50","Bid":"3060.00","Ask":"3061.00","Spread":"1.00","ProductType":"2",},{"Symbol":"TRYJPY","Bid":"38.986","Ask":"39.003","Spread":"1.70","ProductType":"1",},{"Symbol":"NZDCAD","Bid":"0.88767","Ask":"0.8878","Spread":"1.30","ProductType":"1",},{"Symbol":"EURNZD","Bid":"1.67013","Ask":"1.67029","Spread":"1.60","ProductType":"1",},{"Symbol":"XAUUSD","Bid":"1231.13","Ask":"1231.55","Spread":"42.00","ProductType":"5",},{"Symbol":"NZDUSD","Bid":"0.66508","Ask":"0.66516","Spread":"0.80","ProductType":"1",},{"Symbol":"SUI20","Bid":"7960.00","Ask":"7964.00","Spread":"4.00","ProductType":"2",},{"Symbol":"NZDJPY","Bid":"75.101","Ask":"75.108","Spread":"0.70","ProductType":"1",},{"Symbol":"UKOil","Bid":"38.98","Ask":"39.03","Spread":"5.00","ProductType":"3",},{"Symbol":"CHFJPY","Bid":"114.488","Ask":"114.494","Spread":"0.60","ProductType":"1",},{"Symbol":"EURCHF","Bid":"1.0957","Ask":"1.09574","Spread":"0.40","ProductType":"1",}]});
Everything returnes 'undefined'. Here is a fiddle

Your response is returning an array of objects. Iterating over that array should give you the data. Something like this could work:
$(function(){
var API = "https://ratesjson.fxcm.com/DataDisplayer";
$.ajax({
url: API,
dataType: 'jsonp',
crossDomain: true,
success:function( msg ) {
var html = '';
var Symbol = msg.Rates.Symbol;
for(var i = 0; i < msg.Rates.length; i ++) {
html += '<tr><td>'+msg.Rates[i].Symbol+'</td><td>'+msg.Rates[i].Bid+'</td><td>'+msg.Rates[i].Ask+'</td><td>'+msg.Rates[i].Spread+'</td></tr>';
console.log("Symbol: " +msg.Rates[i].Symbol);
}
$('#dataTable tbody').html(html);
}
});
});
Updated fiddle: https://jsfiddle.net/igor_9000/5o9q8g0y/2/
Hope that helps!

Try with this :
var Symbol = msg.Rates[0].Symbol;
console.log(JSON.stringify(Symbol));

Try this-
$(function(){
var API = "https://ratesjson.fxcm.com/DataDisplayer";
$.ajax({
url: API,
dataType: 'jsonp',
crossDomain: true,
success:function( msg ) {
$.each(msg.Rates, function ( key, value )
{
console.log(key +":"+ value);
});
}
});
});

JSON.parse : why this doesn't work

I got a JSON :
$.ajax({
type: "POST",
url: myUrl,
success: function (result) {
var data = JSON.parse(result);
for (var i = 0; i < data.poles.length; i++) {
....
What i see in debugger is that :
data = "{"poles":[{"id":36,"name":"AUVERGNE"},{"id":44,"name":"Alsace"},{"id":42,"name":"Artois"},....],"poleNumber":48}
But i get a message saying that data.poles is not defined
What do i miss?

Is Json ok?
{"poles":[{"id":36,"name":"AUVERGNE"},{"id":44,"name":"Alsace"},{"id":42,"name":"Artois"}],"poleNumber":48}
EDIT:
Ok, if you have this JSON:
data = {"poles":[{"id":36,"name":"AUVERGNE"},{"id":44,"name":"Alsace"},{"id":42,"name":"Artois"}],"poleNumber":48}
you can make data.poles perfectly. delete the first ", you have a wrong json, so you will never parse
"{"poles":[{"id":36,"name":"AUVERGNE"},{"id":44,"name":"Alsace"},{"id":42,"name":"Artois"}],"poleNumber":48}

jQuery JSON SyntaxError: JSON.parse only on FIREFOX

Hi Guys the problem is simple but I can't resolve it - it happen only in FIREFOX here is code:
$.ajax({
type: "POST",
url: validUrl,
data: serializedForm,
beforeSend: function(x) {
if(x && x.overrideMimeType) {
x.overrideMimeType(jsonMimeType);
}
},
dataType: "json",
success: function(resp){
console.log(resp);
var arr = jQuery.parseJSON(resp);
}
});
console.log give such answer:
["emailAddress.used", "register.confirmRulesError"]
I have error in:
var arr = jQuery.parseJSON(resp);
Full error:
SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
This happens only in FireFox and I can't find solution.
Response header is: Content-Type application/json;charset=UTF-8
Any ideas how to solve this ?

try without parse json you data.because,
response data look like this,
["emailAddress.used", "register.confirmRulesError"]
if you tring to parse,need key,value pair in json,that is reason it thorw exception.
{["emailAddress.used", "register.confirmRulesError"]}//not allowed.

Javascript json object parsing [duplicate]

This question already has answers here:
How can I access and process nested objects, arrays, or JSON?
(31 answers)
Closed 9 years ago.
$(document).ready(function () {
var oOpenOrders = new Array();
$('#btn').click(function () {
$.ajax({
type: 'GET',
url: 'http://192.168.19.22/test.php',
contentType: "application/json; charset=utf-8",
dataType: 'json',
success: function (data) {
debugger;
for(var i=0; i<data.length; i++){
alert(typeof(data.id));
oOpenOrders.push(data);
}
var obj = jQuery.parseJSON(data);
debugger;
this code snippet i am using and want to parse it(want to use lat, long) even data.length say correct length 4 for following json, following json is coming from ajax call.:
[{"id":"3037","latitude":"28.617422000","longitude":"77.381180000"},
{"id":"3036","latitude":"28.617422000","longitude":"77.381180000"},
{"id":"3035","latitude":"28.617422000","longitude":"77.381180000"},
{"id":"3034","latitude":"28.617422000","longitude":"77.381180000"}]
any idea ?

Try this
alert(typeof data[i].id);

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