Objects and arrays addition

by

Here is a full explanation of this, check it.

And note {} + {} be NaN if you execute it directly in the console because {} is thought of a block rather than an object.

({}+{}) should be '[object Object][object Object]'

The real result is:

console.log({}+{}) // '[object Object][object Object]'
console.log([]+{}) // '[object Object]'
console.log({}+[]) // '[object Object]'
console.log([]+[]) // ''

More Related Contents:

  1. How can I write a function that will format a camel cased string to have spaces?
  2. How to Protect website code PHP / JS? [closed]
  3. jQuery AJAX file upload PHP
  4. How to decode HTML entities using jQuery?
  5. What is the difference between a User and a GuildMember in discord.js?
  6. I know that callback function runs asynchronously, but why?
  7. How to get “GET” request parameters in JavaScript? [duplicate]
  8. How do I remove all null and empty string values from an object? [duplicate]
  9. Adding a new array element to a JSON object
  10. How do I convert special UTF-8 chars to their iso-8859-1 equivalent using javascript?
  11. Intercept a form submit in JavaScript and prevent normal submission
  12. AngularJS browser autofill workaround by using a directive
  13. What is the difference between ‘let’ and ‘const’ ECMAScript 2015 (ES6)?
  14. How to make a JSON call to an URL?
  15. How does x|0 floor the number in JavaScript?
  16. Javascript variables in HTML attributes
  17. How to sort an array based on the length of each element?
  18. How to describe “object” arguments in jsdoc?
  19. RegEx: How can I match all numbers greater than 49?
  20. How to save data from a form with HTML5 Local Storage?
  21. Submit form after calling e.preventDefault()
  22. When should I use delete vs setting elements to null in JavaScript? [duplicate]
  23. Age from Date of Birth using JQuery
  24. Rendering an array.map() in React
  25. Does new React Context API trigger re-renders?
  26. How to change date format in JavaScript [duplicate]
  27. How can I open a link in the default web browser from an HTA?
  28. Submit jQuery UI dialog on
  29. Changing the page title with Jquery
  30. How to get the filename from a file downloaded using Javascript Fetch API?

Leave a Comment