Absolutely print script in footer

Cannot be overwritten

Cannot be removed/filtered

This will be done by a plugin.

These are mutually exclusive. Such a thing can’t be done by a plugin or by any other code from within WordPress. You would need to hook code in elsewhere, at the webserver or PHP level.

You could use the PHP.INI directives of auto_append_file or auto_prepend_file to force some other PHP code to always be included in a way that the user could not change. In theory, this could be used to put code into the footer, but it wouldn’t be guaranteed to work with any particular theme, because it would happen outside the WordPress context.

Related Posts:

  1. What does wp-embed.min.js do in WordPress 4.4?
  2. How to add javascript just before the closing body tag in the footer of WordPress
  3. How to add code to just before closing body tag
  4. How to add JS in footer
  5. Move all the JS files to the bottom|footer, the right way
  6. Only loads on the contact template page
  7. How to place script in footer?
  8. javascript conflict
  9. Weird links found in wordpress footer
  10. How can I load certain JavaScripts only on blog pages?
  11. On click load iframe [closed]
  12. get_header() in backend – but keep JavaScript and CSS files
  13. How do I check whether a checkbox is checked in jQuery?
  14. SyntaxError: Unexpected token o in JSON at position 1
  15. What does the function then() mean in JavaScript?
  16. Understanding unique keys for array children in React.js
  17. (Google Map API) Geocode was not successful for the following reason: REQUEST_DENIED
  18. Heroku: “No default language could be detected for this app” error thrown for node app
  19. Loop inside React JSX
  20. Can’t resolve module (not found) in React.js
  21. Is there a difference between /\s/g and /\s+/g?
  22. How to read an external local JSON file in JavaScript?
  23. Setting a backgroundImage With React Inline Styles
  24. Filter array to have unique values
  25. How do I chop/slice/trim off last character in string using Javascript?
  26. What is causing this error – “Fatal error: Unable to find local grunt”
  27. Escape quotes in JavaScript
  28. “Uncaught (in promise) undefined” error when using with=location in Facebook Graph API query
  29. Firebase Permission Denied
  30. Using Javascript in CSS
  31. JavaScript variable assignments from tuples
  32. jQuery $.cookie is not a function
  33. Setting background-image using jQuery CSS property
  34. What is ESNext?
  35. SyntaxError: Cannot use import statement outside a module
  36. Appending to an object
  37. What is the meaning of “$” sign in JavaScript
  38. How to determine the installed webpack version
  39. Cannot find module ‘internal/fs’ after upgrading to node 7
  40. How can I select an element by name with jQuery?
  41. How can I group data with an Angular filter?
  42. jQuery disable/enable submit button
  43. Uncaught Invariant Violation: Too many re-renders. React limits the number of renders to prevent an infinite loop
  44. node-request – Getting error “SSL23_GET_SERVER_HELLO:unknown protocol”
  45. javascript setTimeout() not working
  46. JQuery issue “TypeError: $.getJSON is not a function”
  47. Why is marquee deprecated and what is the best alternative?
  48. For loop for HTMLCollection elements
  49. Refresh/reload the content in Div using jquery/ajax
  50. command not found: jest
  51. How to access Session variables and set them in javascript?
  52. Google Maps JS API v3 – Simple Multiple Marker Example
  53. HTML onchange (this.value)
  54. SyntaxError: Use of const in strict mode
  55. d3 is not defined – ReferenceError
  56. How to check if a number is between two values?
  57. How to determine if Javascript array contains an object with an attribute that equals a given value?
  58. Download a file by jQuery.Ajax
  59. What does “export default” do in JSX?
  60. Strip all non-numeric characters from string in JavaScript
  61. Customizer JS API
  62. Adding javascript to child theme
  63. Open media frame and select an attachment
  64. Loading different JS for http and https
  65. How to get the ToggleControl Gutenberg component working for a PHP Block
  66. How to append a URL parameter to all outbound URLs
  67. Loading Javascript Only When Specific Content Existing in a Post?
  68. Javascript Helpers
  69. wp_register_script unable to link bootstrap JS
  70. Rest API invalid nonce with Backbone Client
  71. How do I change number of columns in a proper way in twentyfourteen child theme?
  72. How do I embed a Javascript form directly into a page?
  73. Using google graph api with wordpress
  74. Using wp.data.select get actual tags (not id’s) used in post
  75. Enqueue script if screen is greater than 500
  76. window.send_to_editor throws unterminated string literal error when adding image with multi line description
  77. Gutenberg get core data – search
  78. How to use Readmore.js? [closed]
  79. Gutenberg richtext block vaildation failed
  80. Javascript only works if browser Developer Tools panel is open
  81. How to read inline-CSS from Gutenberg block?
  82. WP adds long version query strings to CSS and JS files
  83. javascript not loading
  84. How does WP determine the difference between a post and a page url
  85. jQuery UI Tools: Scrollable: More than 1 instance possible?
  86. Uncaught TypeError: switchEditors.switchto is not a function
  87. Check if user can in javascript
  88. Rest API and how to deal with it in server side
  89. Is it possible to override only a part of another plugin’s / theme’s js (asset) file?
  90. VisualComposer/WPBakery Page Editor: Is any JS event triggered after the Edition pop-in is shown?
  91. How do I integrate a codepen?
  92. Can I just insert JavaScript by using ?
  93. Gutenberg Edit Block Inspector Controls and save
  94. JavaScript and Google PageSpeed + wp_enqueue_script
  95. How to modify a class in load-scripts.js ?
  96. Trigger a function during onload
  97. Add Javascript/Html into a WordPress
  98. Google AdSense Ad not showing up in WordPress Blog [closed]
  99. Passing object to FormTokenField suggestions
  100. How to Update a variable even if the web page reloads in js