CODEWITHSUNDEEP
jsoncjson
Austen Stone
Austen Stone

Reputation: 1069

What is the JSON Standard for an empty string or null variable?

I'm building an application that parses a JSON template and then replaces the values of the objects with new data. My question is what is the standard way to represent empty data in JSON?

This is how I'm handling this right now:

Is this correct?

Upvotes: 6

Views: 33244

Answers (2)

Jester
Jester

Reputation: 3317

It should be pretty straight forward.

{
  "Value1": null, 
  "Value2": null,
}

Null represents a null-able datatype so your business layer needs then to know if that is an int, double, string ...

Upvotes: 7

Simone
Simone

Reputation: 21272

It is entirely up to you.

The falsy values in JavaScript are:

  • false
  • null
  • undefined
  • 0
  • NaN
  • '' or ""

You can use any of these to represent an empty value. However, keep in mind that when you try to access an object's property which doesn't exist, you will get undefined. So undefined can be considered the standard null value, in a way.

Having said that, one convention is to use null so that you can distinguish a property that has been intentionally set to null from a property that is actually undefined.

Upvotes: 0

Related Questions