All Questions
4,881
questions
1382
votes
23
answers
1.8m
views
Convert JS object to JSON string
If I defined an object in JS with:
var j={"name":"binchen"};
How can I convert the object to JSON? The output string should be:
'{"name":"binchen"}'
- 62.8k
473
votes
8
answers
432k
views
Reverse of JSON.stringify?
I'm stringyfing an object like {'foo': 'bar'}
How can I turn the string back to an object?
- 11.4k
324
votes
21
answers
1.7m
views
Adding elements to object
I need to populate a json file, now I have something like this:
{"element":{"id":10,"quantity":1}}
And I need to add another "element". My first step is putting that json in a Object type using cart ...
- 4,107
320
votes
15
answers
623k
views
How to get object length [duplicate]
Is there any built-in function that can return the length of an object?
For example, I have a = { 'a':1,'b':2,'c':3 } which should return 3. If I use a.length it returns undefined.
It could be a ...
- 11.2k
301
votes
11
answers
1.1m
views
Converting Java objects to JSON with Jackson
I want my JSON to look like this:
{
"information": [{
"timestamp": "xxxx",
"feature": "xxxx",
"ean": 1234,
"data": "xxxx"
}, {
"timestamp": "yyy",
...
- 3,223
232
votes
5
answers
303k
views
Which characters are valid/invalid in a JSON key name?
Are there any forbidden characters in key names, for JavaScript objects or JSON strings? Or characters that need to be escaped?
To be more specific, I'd like to use "$", "-" and space in key names.
- 27.9k
218
votes
16
answers
283k
views
Parse JSON String into a Particular Object Prototype in JavaScript
I know how to parse a JSON String and turn it into a JavaScript Object.
You can use JSON.parse() in modern browsers (and IE9+).
That's great, but how can I take that JavaScript Object and turn it ...
- 16.9k
218
votes
10
answers
65k
views
Multiple arguments vs. options object
When creating a JavaScript function with multiple arguments, I am always confronted with this choice: pass a list of arguments vs. pass an options object.
For example I am writing a function to map a ...
- 27.9k
167
votes
20
answers
592k
views
Convert object string to JSON
How can I convert a string that describes an object into a JSON string using JavaScript (or jQuery)?
e.g: Convert this (NOT a valid JSON string):
var str = "{ hello: 'world', places: ['Africa', '...
- 2,327
141
votes
9
answers
104k
views
Determine whether JSON is a JSONObject or JSONArray
I am going to receive either a JSON Object or Array from server, but I have no idea which it will be. I need to work with the JSON, but to do so, I need to know if it is an Object or an Array.
I am ...
- 3,100
128
votes
9
answers
203k
views
Difference between JSON object and JSON array
After having a short look at Google I found this link that describes the difference between a JSON object and a JSON array, yet from a syntax point of view.
When would one be used over the other in a ...
- 9,541
113
votes
17
answers
307k
views
Get specific object by id from array of objects in AngularJS
I have a JSON file containing some data I d like to access on my AngularJS website. Now what I want is to get only one object from the array. So I d like for example Item with id 1.
The data looks ...
- 2,373
112
votes
13
answers
234k
views
How can I check if a value is a JSON object?
My server side code returns a value which is a JSON object on success and a string 'false' on failure. Now how can I check whether the returned value is a JSON object?
- 15.2k
105
votes
15
answers
112k
views
gson.toJson() throws StackOverflowError
I would like to generate a JSON String from my object:
Gson gson = new Gson();
String json = gson.toJson(item);
Everytime I try to do this, I get this error:
14:46:40,236 ERROR [[BomItemToJSON]] ...
- 5,682
105
votes
11
answers
174k
views
Serializing PHP object to JSON
So I was wandering around php.net for information about serializing PHP objects to JSON, when I stumbled across the new JsonSerializable Interface. It's only PHP >= 5.4 though, and I'm running in a 5....
- 20.5k