Passing scope to forEach

by

You need to use Function#bind to bind a scope:

words.forEach(this.addToCount.bind(this));

Note that this is not available in all browsers: you should use a shim (as provided in the link above) to add it in the browsers that don’t support Function#bind.

As dandavis points out in the comments, you can pass a value to Array#forEach as the context for the callback:

words.forEach(this.addToCount, this);

More Related Contents:

  1. I have a string in javascript. I need to pick all strings between “{” and “}”
  2. Can I escape HTML special chars in JavaScript?
  3. React useEffect in depth / use of useEffect?
  4. How to map more than one property from an array of objects
  5. How can I simulate a click to an anchor tag?
  6. Set a cookie to HttpOnly via Javascript
  7. Prevent safari loading from cache when back button is clicked
  8. javascript: Clear all timeouts?
  9. Is there a callback on completion of a CSS3 animation?
  10. Initializing select with AngularJS and ng-repeat
  11. Load local JSON file into variable
  12. Importing modules using ES6 syntax and dynamic path [duplicate]
  13. How to change browser focus from one tab to another
  14. Getting around same origin policy in javascript without server side scripts
  15. What does href expression do?
  16. What is lexical ‘this’? [duplicate]
  17. Add a duration to a moment (moment.js)
  18. Google Chrome Javascript Debugger and Content Scripts
  19. How to handle in textarea?
  20. Making a Chrome Extension download a file
  21. Record 5 seconds segments of audio using MediaRecorder and then upload to the server
  22. How can I edit on my server files without restarting nodejs when i want to see the changes?
  23. function F() { if (!(this instanceof F)) { return new F() }; … }
  24. HTML Canvas Full Screen
  25. Is it possible to stop requireJS from adding the .js file extension automatically?
  26. iframe not reading cookies in Chrome
  27. Pass Node.js environment variable with Windows PowerShell [duplicate]
  28. Emulate clicking a link with Javascript that works with IE
  29. What is the new proper way to use a child selector with a context node in jQuery?
  30. How to convert a hexadecimal string to Uint8Array and back in JavaScript?

Leave a Comment