Check if username exist with AJAX

The problem is with your jQuery selector:

var usr = $("#site-addres-input").attr('value');

Will get the default value of the input element. Typically this will be blank, because you’re not setting it ahead of time. You need to use:

var usr = $("#site-addres-input").val();

I’m also noticing that you’re using #site-addres-input, but “address” has two s at the end. Not sure if this is also causing you a problem or not …

Related Posts:

  1. Ajax Redirect role = ‘Editor’ to their Dashboard after register
  2. How to check username availability with ajax at registration
  3. (updated) How to add AJAX error handling to a (fully) custom registration form?
  4. How to make registration form ajax?
  5. WordPress is creating nonce as a logged in user but verifying it incorrectly
  6. Register Template
  7. Add Server Side validation in Ajax mail form
  8. Registration form AJAX check for existing username (simple version)
  9. how to get password from user instead wp-generate-password
  10. jQuery: Performing synchronous AJAX requests
  11. Best way to end WordPress ajax request and why?
  12. Update user meta using with ajax
  13. WordPress function that makes HTML safe to be sent via AJAX request
  14. admin-ajax.php returns 0. How do I debug it and fix it?
  15. Detecting post type within init action
  16. Basic question on passing variables to AJAX in WordPress
  17. Metabox cloning via Admin Ajax call issue
  18. Serving nonces through AJAX is not refreshing nonce, returning 403 error
  19. Cannot update my options using wp_ajax
  20. ajax and nonce when JavaScript is in a seperate file
  21. Prevent wp_debug from polluting ajax within plugin
  22. How to localize inline script called with ajax
  23. Conditional Ajax inclusion
  24. Is there a maximum length to user passwords?
  25. Load ajax if is_home()
  26. How to know what page is calling admin-ajax.php?
  27. Populate a Map at The Same Time as showing Posts via AJAX
  28. wp_localize_script not working on ajax response
  29. Why Does WordPress not output admin-ajax.php path by default?
  30. SSO autologin WordPress + Ajax
  31. Test WordPress api with postman
  32. How to process wordpress ajax call without action parameter?
  33. All AJAX requests return a 400 error
  34. Unable to successfully verify nonce
  35. Create custom POST Method URL
  36. POST Ajax bad request
  37. Getting a variable using $post ajax back from php to js response in WP
  38. AJAX Call – Failed to load resource: the server responded with a status of 500 (Internal Server Error)
  39. WordPress is Not Setting PHP $_POST on Custom Ajax
  40. bulk update meta value with ajax
  41. Ajax Validation for reCaptcha
  42. Ajax for subscibers not working
  43. javascript ajax and nonce
  44. Is it possible to determine whether a page is a page template by page_id in ajax call?
  45. Chained ajax call, second call returns 0
  46. How to create a form button that executes a function?
  47. How to stop being directed to admin.php after sending request to admin-ajax.php
  48. 200 return code on ‘POST /wp-admin/admin-ajax.php’ while NOT logged in
  49. i’m trying to get all my media query attachments via ajax in wordpress
  50. Distinguish between 2 instances of admin-ajax.php
  51. How to update post with Ajax (no plugin)
  52. Next Ajax call doesn’t work
  53. Ajax page load without reload
  54. need a confirmation text to appear on email submission
  55. Including ‘wp-load.php’ after another include() generates an error
  56. How to make pages that arent indexed for ajax applications
  57. Why does reCAPTCHA v3 return 0 ? In custom AJAX registration form
  58. admin-ajax.php 400 bad request
  59. WordPress Ajax Page Load to skip embedded iframe
  60. edit user input data contact form 7
  61. WordPress POST AJAX call, var_dump($_POST) NULL and AJAX response empty when inside ob_start
  62. Set cors header for ajax requests
  63. Simple AJAX code that refreshes every x seconds?
  64. How to keep scripts persistent during admin-ajax process when saving widget?
  65. Very weird bug: Ajax for non-admins
  66. Search function – problem with whole words
  67. jQuery ajax method does not return data
  68. WordPress 403 error on form submission with Ajax
  69. I am getting Admin-ajax.php 400 Error
  70. Ajax and get_template_part
  71. Ajax is not defined
  72. Get posts by category via ajax
  73. Download doccument on server rather than clients browser
  74. How to require files in a custom endpoint
  75. Load oEmbed iframe within ajax call
  76. Adding pagination to Ajax Query
  77. WordPress 4.9.6 – IncludeMe & getAjax GET using wrong URL
  78. Create secondary Archive page format?
  79. Get post details with pure javascript ajax
  80. WorddPress website admin part not working correctly – I think ajax/json issue
  81. check_admin_referer fails on new AJAX plugin uninstall with “Are you sure you want to do this?”
  82. Ajax Security regarding user priviliges and nonces
  83. How to populate data from JSON using AJAX in TypeScript? [closed]
  84. Filter and validate user role in registration
  85. Use ajax without a plugin?
  86. Weird admin-ajax.php problem
  87. Ajax contact form returnig 0
  88. Know which script/page is being called by ajax call
  89. Trying to send AJAX data to WordPress hook
  90. wp_enqueue_media problem
  91. Can’t update WP Editor after Ajax
  92. Update user meta using Ajax on front end?
  93. retrieving page content per AJAX [duplicate]
  94. Posting to loop.php file
  95. Can’t access data from database using AJAX
  96. $wpdb Ajax not redirecting to main page
  97. Custom WP rest api endpoint only working on non https?
  98. Blocking admin-ajax.php from outside domain
  99. Object name undefined using localize script
  100. Help with jquery/ajax requests