Should JSON include null values [closed]

by

I am a fan of always including null explicitly as that carries meaning.
While omitting a property leaves ambiguity.

As long as your protocol with the server is agreed upon any of the above can work, but if you pass nulls from the server I believe that makes your APIs more flexible later.

Should also mention that javascript’s hasOwnProperty function gives you further insight.

/* if true object DOES contain the property with *some* value */
if( objectFromJSON.hasOwnProperty( "propertyName" ) )

/* if true object DOES contain the property and it has been set to null */
if( jsonObject.propertyName === null )

/* if true object either DOES NOT contain the property
   OR
   object DOES contain the property and it has been set to undefined */
if( jsonObject.propertyName === undefined )

More Related Contents:

  1. Is there a standard function to check for null, undefined, or blank variables in JavaScript?
  2. What is the difference between null and undefined in JavaScript?
  3. How can I determine if a variable is ‘undefined’ or ‘null’?
  4. Why is null an object and what’s the difference between null and undefined?
  5. How to check for an undefined or null variable in JavaScript?
  6. JavaScript checking for null vs. undefined and difference between == and ===
  7. Why is there a `null` value in JavaScript?
  8. How to resolve TypeError: Cannot convert undefined or null to object
  9. What reason is there to use null instead of undefined in JavaScript?
  10. JavaScript String concatenation behavior with null or undefined values
  11. When is null or undefined used in JavaScript? [duplicate]
  12. Is it better to return `undefined` or `null` from a javascript function? [closed]
  13. How can I unset a JavaScript variable?
  14. Why does this JavaScript code print “undefined” on the console?
  15. How to store a javascript function in JSON
  16. jQuery.getJSON – Access-Control-Allow-Origin Issue
  17. Uncaught TypeError: Cannot use ‘in’ operator to search for ‘length’ in
  18. Accessing JSON object keys having spaces [duplicate]
  19. Load local JSON file into variable
  20. How dangerous is it in JavaScript, really, to assume undefined is not overwritten?
  21. JSON left out Infinity and NaN; JSON status in ECMAScript?
  22. Import JSON file in React
  23. XML to JavaScript Object
  24. loading json data from local file into React JS
  25. Re-associating an object with its class after deserialization in Node.js
  26. Issues with Date() when using JSON.stringify() and JSON.parse()
  27. deserialize Jackson object in JavaScript containing JsonIdentityInfo
  28. SyntaxError: JSON.parse: unexpected character at line 1 column 1 of the JSON data
  29. Updating a JSON object using Javascript
  30. How to get the total depth of an unknown JSON hierarchy?

Leave a Comment