Best way to use ajax front-end?

Never ever use your theme/plugin files directly for ajax calls, always use admin-ajax.php. This is the only recommended way of doing ajax to ensure maximum compatibility with wordpress (including future versions) & 3rd party plugins/themes

The best/easiest way depends on the situation & is debatable but i would ask you to use admin-ajax.php even if it is hard or inefficient

Related Posts:

  1. Update user meta using with ajax
  2. WordPress AJAX Login Screen
  3. How to link WordPress heartbeat to ajax form
  4. How to correctly load wordpress in a non WP script for AJAX request
  5. Insert wp_editor on front-end with AJAX?
  6. Help with AJAX front end comment moderation
  7. Using AJAX with Forms
  8. Three level taxonomy dropdown frontend
  9. Performance optimization of tree like structure
  10. Is it secure to use admin-ajax.php in front?
  11. wp_ajax declaration confusing for Front end
  12. How to get post from pure frontend AJAX (using only post ID)?
  13. How to prevent my external API call from being called by anyone but me (my site)
  14. Update user meta via ajax from frontend, saving issue
  15. Edit user meta on front-end via AJAX
  16. How to test if in dashboard, bypassing Ajax quirk
  17. ajax page template
  18. Google Maps API throws “Uncaught ReferenceError: google is not defined” only when using AJAX
  19. Using Ajax with a Class file
  20. SSL breaks customizer: page isn’t returned from ajax
  21. Stop admin-ajax?
  22. How to verify nonce from Bulk/Quick Edit in save_post?
  23. How to implement AJAX post navigation into WordPress?
  24. wp_ajax_[service] returning 0
  25. Trying to load content of a post via AJAX
  26. Insert Post using Ajax
  27. How can I automatically login using a URL?
  28. Ajax function returns -1
  29. Problems with creating sortable sections in customizer
  30. Is it OK to use a system cron to trigger a function hooked into the AJAX API
  31. Filter WP user acf field by ajax
  32. Ajax Request not coming back to class
  33. How to make ajax content indexable by search engines?
  34. Ajax requests with different WordPress Address and Site Address setup
  35. Conditional action hooks
  36. AJAX requests broken due to HTTPS for wp-admin
  37. query vars in url work but not in ajax call
  38. is_home doesn’t affect content
  39. Is it safe to use $_POST directly in my plugin instead of using admin-ajax.php to receive data from ajax?
  40. How to make get_theme_mod work with AJAX in the customizer preview
  41. How to declare a JS variable in an AJAX call
  42. is_page() conditional not working inside an AJAX function
  43. jQuery Ajax passing empty parameters to my function?
  44. Fatal error: Call to undefined function get_post() with ajax
  45. how to send Ajax request in wordpress backend
  46. admin-ajax.php slow website, how to fix
  47. wp_create_nonce() in REST API makes user->ID zero
  48. ajax nonce verification failing
  49. Plugin: AJAX query external API to sync to tables
  50. admin-ajax.php ” Missing argument 2″ warning
  51. Update get_pages using ajax on form select change
  52. splitting the URL using jQuery
  53. How do I get reusable blocks via frontend REST API?
  54. Is there builtin way to use protected AJAX endpoint?
  55. How to create an ajax endpoint without js?
  56. WP Ajax never returning any data / calling action
  57. How to load content from many posts on a page, only if needed
  58. Making an ajax request from a different domain
  59. WordPress Settings api data not sanitized if i use ajax
  60. Pagination Using ajax
  61. wp_ajax_ works fine but wp_ajax_nopriv_ returns HTML and not calling function
  62. Why is wp_localize_script returning false?
  63. AJAX call inside plugin class not triggering
  64. WordPress Heartbeat API cannot parse data
  65. Ajax function on #publish only saves as draft – how to make it publish?
  66. AJAX call broken after actualization
  67. WP_Ajax Hook doesn’t execute this PHP code
  68. Ajax function not returning any results
  69. post values to custom post type which has advanced custom fields
  70. wp_mail doesn’t work when logged in?
  71. How to continuously send feedback via AJAX responses to my client?
  72. get current taxonomy post with ajax
  73. Need help with Access-Control-Allow-Origin
  74. Send email via ajax
  75. wp_ajax handler with multiple class instances
  76. admin-ajax.php (aborted) error when using jQuery.get
  77. Storing temporary data for a custom post type
  78. I get a 0 after the result of my ajax requests
  79. Load page HTML content through AJAX
  80. Not getting an ajax readystatechange on my page
  81. WordPress Select Option Load Custom Fields
  82. Add ajax to plugin in admin area
  83. Search live Ajax
  84. Ajax login fails: script sets cookies, but is_user_logged_in() returns false
  85. Using wp_send_json_success instead of $result[‘message’], die, etc
  86. Ajax call on class returns old data
  87. how to enable ajax on submitting of contact form 7?
  88. delete post meta data in array WordPress
  89. How to trigger lost password email using REST API?
  90. Display post thumbnail after clicking on post id with AJAX
  91. Error while submitting form using AJAX and php
  92. How to fetch meta_value and meta_key in matrix after ajax request by post_id
  93. Manually cache a special, non-WP-but-using-WP page (e.g. Ajax results) with W3TC
  94. Is it a good idea to init ajax functions only while ‘DOING_AJAX’
  95. register_setting and AJAX?
  96. ajax response is 0 instead of ‘script’ [duplicate]
  97. A refreshless WordPress website
  98. Dynamic dependent select box getting null value
  99. get_template_part() does not render after the ajax request
  100. Run PHPMailer function after ajax function completes that adds row to custom table