How to pass array from jQuery to PHP with AJAX in WordPress?

If assign_categories() is in a class, you have to call the action in a different way.

add_action( 'wp_ajax_assign_categories', 'assign_categories' );

becomes

add_action( 'wp_ajax_assign_categories', array( $this, 'assign_categories' ) );

The $this in this context is the class.

Related Posts:

  1. Access-Control-Allow-Origin error sending a jQuery Post to Google API’s
  2. Access-Control-Allow-Origin error sending a jQuery Post to Google API’s
  3. jQuery: Performing synchronous AJAX requests
  4. jQuery’s .on() method combined with the submit event
  5. How to link WordPress heartbeat to ajax form
  6. AJAX Implementation
  7. Drag and drop multiple file upload using Ajax WordPress
  8. How to securely add an Ajax button to a WP Admin page?
  9. Turn jQuery.ajax() request into XMLHttpRequest (vanilla JavaScript)
  10. admin-ajax.php HTTP400: BAD REQUEST – The request could not be processed by the server due to invalid syntax
  11. WordPress AJAX Call Not Return Result
  12. How to add WP API and JS featured image attachment
  13. jQuery Ajax passing empty parameters to my function?
  14. WordPress Admin AJAX Serialize
  15. Ajax Modal Flickers When Opened Multiple Times
  16. splitting the URL using jQuery
  17. How would you update a frontend form with AJAX
  18. Why is on status span no search results?
  19. How to handle 400 status in Ajax [duplicate]
  20. Refresh Markercluster after ajax call
  21. AJAX request randomly stop working and returns error 400
  22. Bad request 400 from custom ajax call
  23. All AJAX requests return a 400 error
  24. How to pass parameters from jQuery ajax into PHP function?
  25. WordPress Heartbeat API cannot parse data
  26. I can’t get a return value from Ajax
  27. WordPress AJAX return 0 – My case
  28. merge wp rest api query to get posts per category does not work
  29. WP AJAX post filter > do something with empty value
  30. 403 error When i send ajax request on WordPress website
  31. AJAX jQuery post frontend returning failed to load resource status 400
  32. Load more posts in the same category – Ajax + Timber
  33. How to jQuery Ajax show new data from successful insert?
  34. wp_mail doesn’t work when logged in?
  35. Problems with wordpress nonces in Ajax call
  36. Ajax call in WordPress – unable to display the data on the page
  37. Get post content and show it in a div
  38. Output multi-steps form results in same page
  39. Full Front End, AJAX comment system and comment reply script
  40. How to display contact form 7 form in vanilla js without jquery in frontend
  41. Ajax Favorite from foreach (how to specify which result result is processed)
  42. Display full WordPress post under search form using AJAX
  43. WordPress Select Option Load Custom Fields
  44. Uncaught TypeError: Cannot read properties of undefined (reading ‘message’) [closed]
  45. Fetch value using AJAX in WordPress
  46. Query data after an Ajax insert
  47. AJAX not working when clicking load more button, when two terms are present in tax_query
  48. Search live Ajax
  49. javascript onClick update user_meta from jquery.ajax
  50. WordPress POST AJAX call, var_dump($_POST) NULL and AJAX response empty when inside ob_start
  51. jQuery.post returns 0
  52. Opening Modal popup on Ajax form submission
  53. Ajax sometimes work and sometimes just don’t work
  54. My function containing a mysql query launched by ajax is not working in wordpress. What am I missing?
  55. jQuery ajax method does not return data
  56. JS global variable doesn’t update
  57. 400 Bad Request getting on AJAX Call
  58. jQuery AJAX url wit variable
  59. React to AJAX adding to the page
  60. Updating Jquery object with newly created elements after AJAX call
  61. Download doccument on server rather than clients browser
  62. AJAX POST Value not being returned – WordPress – AutoTrader API
  63. Javascript output now showing in custom widget
  64. Ajax call not working anymore
  65. Can’t get next post info with ajax
  66. How to inject data content from external json into a modal, using UIkit?
  67. Ajax by worpdress affects called jquery inside template file
  68. WordPress sound bell when new data will add
  69. Can’t access data from database using AJAX
  70. WordPress Ajax send response on every iteration of a loop
  71. Custom WP rest api endpoint only working on non https?
  72. Bad Request 400… jQuery ajax post of json data to wordpress admin-ajax.php
  73. How to update my jquery/PHP function to add/remove user as favorites in (WordPress) users list
  74. AJAX call not initializing for non-admins in WordPress
  75. gettext does not translate when called in ajax
  76. Execute one AJAX request after another AJAX request finished
  77. Load tinyMCE / wp_editor() via AJAX [duplicate]
  78. Plupload in metabox – AJAX action not working in Class
  79. Extending wp JavaScript base class to make a post request to a custom REST endpoint
  80. wp_localize_script escaping my url – fix or alternative
  81. Check if email address exists front end with AJAX in a plugin
  82. WordPress customizer refresh screen after save
  83. WordPress ajax problem need wordpress expert?
  84. wp_ajax function did not call
  85. Ajax post filters not working
  86. Single page site + pushState?
  87. wp_update_post onclick button using ajax
  88. wp_ajax declaration confusing for Front end
  89. Delete ACF repeater field row on Front End
  90. Search query with Ajax
  91. ajax in admin menu
  92. Loading pages via Ajax and displaying titles
  93. change wordpress pagination url after doing the request
  94. admin-ajax.php 403 errors – no caching, permissions are fine
  95. Change button text after ajax db update
  96. Colorbox not working on native WordPress gallery when gallery is loaded thru AJAX
  97. Native WordPress Video Shortcode Not Working After Post is Loaded via Ajax
  98. Speeding up admin-ajax.php
  99. Ajax call does not work for this custom code
  100. Class property not visible inside ajax callback function?
techhipbettruvabetnorabahisbahis forumueduseduedueduseduseduseduedueduedus