AJAX call fails when sending JSON but works with URL style string

Firstly, stringify won’t build a URL query – it serializes it into JSON object notation.

And secondly, you don’t even need to build the URL query – if you’re using jQuery to make the AJAX call, just pass the JSON object as it is – jQuery.param() will internally handle it 🙂

Related Posts:

  1. Does the functions.php file ever get called during an AJAX call? Debug AJAX
  2. How bad is it if I write AJAX functions using wp-load.php?
  3. redirect does not work in ajax function
  4. Add a preview to a WordPress Control Panel
  5. Changing the entire control choices using wp.customize with JavaScript
  6. Can’t access WordPress functions in file called via Ajax?
  7. How WordPress converts URL to $query_string
  8. How to Globally Use wp_localize_script() Ajax URL
  9. trying to use wp_handle_upload with ajax
  10. Using AJAX in wordpress theme
  11. Using an if statement in the theme customizer page
  12. Retrieve localised value
  13. AJAXIFY WordPress Theme Frontend menu
  14. Post thumbnail to append post content via ajax click event
  15. Would to use AJAX to get an option from the database and use it in a jquery setup or is there an alternative to consider?
  16. ajax response -1 in wordpress theme
  17. Why does admin-ajax load slow and what are ways to speed it up?
  18. Why WordPress AJAX returns undefined however it works fine when I add static url instead of dynamic function?
  19. How to use ajax in wordpress and sending the data without refreshing ?
  20. Issue on Accessing To Ajax Enqeued File to Pass to URL for Ajax Call
  21. pass wordpress template directory into ajax url call
  22. Ajax call returns 0 when add_action is inside a class in functions.php
  23. Retrieve WordPress’ the_content() with jQuery
  24. Pagination don’t work with active filters
  25. Woocommerce AJAX filters option loading spiner – problem on mobile device
  26. how use ajax to custom page template
  27. How to properly use AWS SES for a contact form?
  28. WordPress Insert ads after every 5th post
  29. Why excerpt hook not working inside ajax function?
  30. Theme functions don’t work as expected in partial included via get_template_part() after custom query using Ajax [duplicate]
  31. How to load jQuery with Ajax in WP version 5.3.2?
  32. Ajax Comment Upvotes – Votes don’t always register
  33. use a single nonce in three different nonce field
  34. Infinite scroll without plugin using ajax
  35. my ajax wont sent the data, please correct my code
  36. wp_kses allow checkbox class and checked
  37. WordPress Ajax Spitting out a page as a response?
  38. Using Customizer value in an external PHP file inside a theme
  39. How to avoid Ajax in wordpress theme in making mulitple request?
  40. Allow access to stand-alone php file WordPress
  41. Which function(s) to build a paged HTML table
  42. How to detect mobile devices and present them a specific theme?
  43. Using wp_add_inline_style without a stylesheet
  44. The difference between calling wp_enqueue_scripts to load scripts and styles in custom theme
  45. WordPress twentytwenty theme inline css overriding css body
  46. What is the problem if I use CDN in my WordPress parent theme(built using bootstrap)?
  47. How can I insert default widgets when my theme is activated (similar to what twenty eleven does)?
  48. date_i18n() issue
  49. Active theme responds to theme change request to alert user
  50. LOST in WP Template Hireachy
  51. Merging PHP download script into `functions.php`
  52. Should use widgets in this case?
  53. Static Front Page problem
  54. Enabling Default Widgets in a Custom Theme
  55. get_post() function returns post even if it is trashed
  56. How to regenerate thumbnails when they’re stored on S3
  57. customizing the_password_form filter
  58. Whats the safest way to output custom JavaScript and Css code entered by the admin in the Theme Settings?
  59. searchform.php override not working
  60. Can’t show custom post thumbnail sizes as background images
  61. Load child template based on parent
  62. How to add material design css in wordpress and woocommerce
  63. JS innerhtml changing style when using AJAX
  64. Timber: Get single image from media library with all attributes
  65. page.php dependent sites are not working in custom woocommerce theme
  66. How to remove text “Log In” from login page
  67. Managing WordPress Theme
  68. Can’t use admin_enqueue_scripts or wp_enqueue_script
  69. How is the `get_sidebar` function meant to be used to call a 2nd sidebar?
  70. Data Validation in wordpress
  71. Gutenberg theme development: how to add “headers” option under styles > colors > elements?
  72. Localize script not working in ajax
  73. How can i make multilevel menu in wordpress theme with bootstrap
  74. Theme logo metadata into template file
  75. Setting conditional background image from meta value
  76. How to Emulate Default Navigation Menu Behaviour in a Custom Theme?
  77. Default PHP document / names needed for a WordPress theme?
  78. How to modify theme content in Thematic?
  79. How to determine when my theme is deactivated?
  80. 1 post per category on homepage and counting those posts
  81. if (has_custom_menu())?
  82. Ensure SQL changes carry over
  83. only the first post is shown
  84. wordpress can’t find single-project page
  85. Is there a way to add classes to a page when using a Gutenberg reusable block as page layout?
  86. How to show some of category in wordpress
  87. using themename_the_custom_logo() in template-tags?
  88. How to make the media library searchable by image title
  89. WordPress doesn’t load css, image and js files after moving local installation folder
  90. Custom page template not showing on page creation
  91. Undefined index: custom_sidebars
  92. How To Customise WordPress Comment Submit Button?
  93. Next/Previous post navigation
  94. Single Featured Image Repeating
  95. Main Menu Theme Different Output Print
  96. How do I move menu to the bottom in Custom Community theme?
  97. How can I install my custom-made theme on a wordpress.com blog? [closed]
  98. A problem in loading index.php
  99. .submenu class missing in output from wp_nav_menu
  100. What is the point of using archive.php instead of index.php?