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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"}'
Bin Chen's user avatar
  • 62.8k
23 votes
13 answers
25k views

Sum JavaScript object propertyA values with the same object propertyB in an array of objects

How would one take a JavaScript array of objects, such as objArr = [ {key:"Mon Sep 23 2013 00:00:00 GMT-0400", val:42}, {key:"Mon Sep 24 2013 00:00:00 GMT-0400", val:78}, ...
AlecPerkey's user avatar
86 votes
12 answers
191k views

Parsing JSON in Excel VBA

I have the same issue as in Excel VBA: Parsed JSON Object Loop but cannot find any solution. My JSON has nested objects so suggested solution like VBJSON and vba-json do not work for me. I also fixed ...
Bastan's user avatar
  • 1,019
8 votes
3 answers
13k views

Array of JSON Object to Java POJO

Converting this JSON object as a class in java, how would the mapping be in your POJO Class? { "ownerName": "Robert", "pets": [ { "name": "Kitty" }, { ...
Rudy's user avatar
  • 719
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", ...
JustTheAverageGirl's user avatar
74 votes
6 answers
93k views

Why is JSON invalid if an integer begins with a leading zero?

I'm importing some JSON files into my Parse.com project, and I keep getting the error "invalid key:value pair". It states that there is an unexpected "8". Here's an example of my JSON: } "...
DJSrA's user avatar
  • 817
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 ...
Luke Taylor's user avatar
  • 9,541
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 ...
BMiner's user avatar
  • 16.9k
60 votes
14 answers
49k views

Merge keys array and values array into an object in JavaScript

I have: var keys = [ "height", "width" ]; var values = [ "12px", "24px" ]; And I'd like to convert it into this object: { height: "12px", width: "24px" } In Python, there's the simple idiom dict(...
itsadok's user avatar
  • 29.2k
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.
Christophe's user avatar
  • 27.9k
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 ...
Greg's user avatar
  • 3,100
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', '...
snorpey's user avatar
  • 2,327
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 ...
Eugene - AmberPixels's user avatar
22 votes
6 answers
106k views

Sorting a JSON object in Javascript

I've been looking for a while to sort a JSON object like this {"results": [ { "layerId": 5, "layerName": "Pharmaceutical Entities", "attributes": { "OBJECTID": "35", "...
Venkatesh Goud's user avatar
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....
Dan Lugg's user avatar
  • 20.5k

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