What is the difference between null and undefined in JavaScript?

by

What is the difference between null and undefined in JavaScript?

More Related Contents:

  1. Is there a standard function to check for null, undefined, or blank variables in JavaScript?
  2. How can I determine if a variable is ‘undefined’ or ‘null’?
  3. Why is null an object and what’s the difference between null and undefined?
  4. How to check for an undefined or null variable in JavaScript?
  5. JavaScript checking for null vs. undefined and difference between == and ===
  6. Why is there a `null` value in JavaScript?
  7. How to resolve TypeError: Cannot convert undefined or null to object
  8. What reason is there to use null instead of undefined in JavaScript?
  9. JavaScript String concatenation behavior with null or undefined values
  10. When is null or undefined used in JavaScript? [duplicate]
  11. Is it better to return `undefined` or `null` from a javascript function? [closed]
  12. Should JSON include null values [closed]
  13. How can I check for an empty/undefined/null string in JavaScript?
  14. How can I check for “undefined” in JavaScript? [duplicate]
  15. How can I unset a JavaScript variable?
  16. variable === undefined vs. typeof variable === “undefined”
  17. How do I check for null values in JavaScript?
  18. Why does this JavaScript code print “undefined” on the console?
  19. Why `null >= 0 && null
  20. forEach on array of undefined created by Array constructor
  21. JavaScript “cannot read property “bar” of undefined [duplicate]
  22. Undefined values in Array(len) initializer
  23. How dangerous is it in JavaScript, really, to assume undefined is not overwritten?
  24. this is undefined inside arrow function
  25. Javascript – removing undefined fields from an object [duplicate]
  26. console.log(myFunction()) returns undefined
  27. JS checking deep object property existence [duplicate]
  28. Test if something is not undefined in JavaScript
  29. How to check null objects in jQuery
  30. JSLint: was used before it was defined

Leave a Comment