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#json - Questions and answers

22 questions, 2 pages, 20 questions on this page

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12 points

JavaScript - is it possible to use Base122 to send file data in JSON?

As in the question, I want to optimize data transmission in my REST API based on JSONs by replacing Base64 into in files data case. Is it possible to make it working?

2 answers

963

3 points

JavaScript - RangeError: Invalid string length

Any idea why my JavaScript source code throws exception when I try to ocnvert object to JSON using JSON.stringify() method? Error:

1 answers

9600

8 points

Java - Is it thread-safe to declare Jackson's ObjectMapper as a static field?

I am confused about using Jackson's com.fasterxml.jackson.databind.ObjectMapper class instance as static field in the class because of possible thread-safety issues. I have found in information where ...

1 answers

413

3 points

TypeScript - tsconfig.json file error: Cannot find type definition file for 'node'

I've just created a new Nuxt 3 project (Vue.js) with tsconfig.json file and it keeps showing me the following error: How can I fix this?

1 answers

1016

9 points

JavaScript - JSON.stringify() throws: Uncaught TypeError: Converting circular structure to JSON

How, am I able to stringify object to JSON, when there are some recurring properties? Is is possible? Excation that throws JSON.stringify() call.

1 answers

830

7 points

JavaScript - Uncaught TypeError: Do not know how to serialize a BigInt

Any idea, why JSON.stringify() throws: when I try to use:

1 answers

543

0 points

JavaScript - encoding Object to JSON string

I have a problem with encoding an object into a JSON string. My Object looks like this: Now, I want to get it into a JSON string to put it into AJAX request. How can I do this?

1 answers

806

0 points

JavaScript - which characters are valid/invalid as JSON key name?

I would like to use special characters like: -, $ and space for key names of objects (or JSON strings). Are there any characters that can make a key name invalid or any characters that need to be esca...

1 answers

832

0 points

JavaScript - JSON.stringify() reverse

When I'm stringyfing an object like: I get: But how can I turn the jsonString back to an object?

1 answers

698

0 points

JavaScript - how to access first element of JSON object array?

I have s20_message which contains only one object. How do I access its message property?

1 answers

860

0 points

JavaScript - create package.json file without answering questions?

How can I create package.json file without answering all the questions and leave it with default values?

1 answers

635

3 points

JavaScript - push to array

How can I push new values to the following array? I've tried: But it doesn't work.

1 answers

1265

0 points

JavaScript - why is number literal a valid JSON to parse and string is not?

Why is number literal a valid JSON to use in JSON.parse() method and string is not? For example, I can parse '123' but '123abc' throws a SyntaxError and I'm not sure why. My code:

1 answers

1070

0 points

JavaScript - why does JSON.parse(['123']) return 123?

Can you help me to understand the behavior of JSON.parse()? It should work for only strings but seems to work for an array that contains only one string if the string contains only numbers.

1 answers

652

0 points

JavaScript - how can I extract property values of object into array?

How can I extract the property values of an object into an array using JavaScript? Example object: The result I want to get:

1 answers

720

0 points

JavaScript - JSON.stringify doesn't show Set elements

Why can't I print the set elements with the JSON.stringify() as I do with array elements? What is the easiest way to display set elements? Example:

1 answers

698

5 points

What is a JSON-safe object?

Reading Kyle Simpson's book You Don't Know JS: this & Object Prototypes, I have found some term: JSON-safe object. What it is?

1 answers

302

2 points

Java Jsoup - simple http GET example with json parsing to java DTO object

How to make simple HTTP GET request with java JSOUP library?

1 answers

654

1 points

Spring - HTTP Status 415 - The server refused this request because the request entity is in a format not supported by the requested resource for the requested method.

I have created some controller that returns some result for indicated GET REST action: With jQuery AJAX GET method it works perfectly, but when I tried to open same url from browser I got following pr...

1 answers