JS setInterval executes only once

by

You are passing the result of executing the function instead of the function itself. Since the result of the function is undefined, you are executing checkIfGameAlreadyStarted and then passing undefined to setInterval which doesn’t do anything.

Instead of this:

setInterval(checkIfGameAlreadyStarted(), 1000);

Your statement should be this:

setInterval(checkIfGameAlreadyStarted, 1000);

without the parentheses at the end of the function name.

When you pass checkIfGameAlreadyStarted() that calls the function immediately and gets it’s return value. When you pass checkIfGameAlreadyStarted that passes a reference to the function so setInterval can call it later (which is what you want).

More Related Contents:

  1. Cannot read property ‘addEventListener’ of null using querySelector [closed]
  2. Please anyone tell me what i do that my website display date and time not get reset on refreshing the page
  3. Show image in div and add PREV/NEXT buttons
  4. When is JavaScript synchronous?
  5. Adding options to a using jQuery?
  6. Is it possible to listen to a “style change” event?
  7. navigator.geolocation.getCurrentPosition sometimes works sometimes doesn’t
  8. How to properly use jsPDF library
  9. How to get the element clicked (for the whole document)?
  10. Prevent form redirect OR refresh on submit?
  11. Detect IF hovering over element with jQuery
  12. jQuery.getJSON – Access-Control-Allow-Origin Issue
  13. Javascript reload the page with hash value
  14. jquery’s live() is deprecated. What do I use now?
  15. Reset select value to default
  16. Filter strings in Array based on content (filter search value)
  17. Restart an animated GIF from JavaScript without reloading the image
  18. Counting and limiting words in a textarea
  19. Slow down scroll to top event by jQuery animate
  20. Disable “Changes you made may not be saved” pop-up window
  21. Proper way to reset a GIF animation with display:none on Chrome
  22. How do object or method chaining work in jQuery?
  23. Clear dropdown using jQuery Select2
  24. Passing JSON data from php to html-data attribute and then to Javascript
  25. How to fire jQuery function only if form is valid
  26. Selecting elements without jQuery
  27. Function not calling within an onclick event
  28. refresh div with jquery
  29. focus on next tabindex of HTML element onEnter keypress by JQuery
  30. How to focus an input field on Android browser through javascript or jquery

Leave a Comment