How to add a handler for a button in plugin?

Related Posts:

1. Customizing subject in comment notification e-mails
2. How to Loop Plugin Option Field Set?
3. Saving Plugin settings to the database
4. HELP: Integrating WP with raw PHP code once published button is hit
5. I would like to use create a function in my custom plugin to tell WP to use a different header
6. Scope for PHP Variables Assigned in functions.php or a plugin
7. WordPress Plugin Page is Loading in Admin Content Container Instead of Separate Page
8. wordpress plugin is not activating from widget
9. Edit Yoast SEO breadcrumbs output [closed]
10. Conditional attributes and logic per product category
11. WordPress get_avatar function not correct working
12. Redirect to another page using contact form 7? [closed]
13. Check if variable is set in filter
14. execute function after one completed
15. Plugin onclick button activate other plugin
16. Different registration form for different roles
17. More gentle way to hook WordPress custom url
18. How to add custom function to pluggable.php
19. Checkbox show / hide output result
20. Allow a particular user to access a particular plugin?
21. Cookie value changes back to previous value after changing
22. Is there any way to sync Facebook Comments and with comments on WordPress website?
23. Custom Plugin: How to Include Install Buttons of other 3rd Party Plugins?
24. adding dynamic/multiple slug values in ‘option_none_value’
25. working code, not working – Plugin Dev
26. Is admin section completely customizable in terms of styling?
27. register_activation_hook doesn’t fire at all
28. My ajax request don´t work and return 0
29. WordPress environment not loading properly
30. Populate select option with JSON file
31. Saving an array to get_options
32. Saving plugin data returns “You do not have sufficient permissions to access this page.”
33. Can anyone tell me why I can’t edit a plugin when it is installed without having to re-install?
34. Doing action based on input from options menu
35. How use Dynamic hyperlink on each wordpress post?
36. How can I save the selected page in the dropdown after anyone clicks on Save Changes?
37. How can I save the selected page in the dropdown after anyone clicks on Save Changes?
38. Mixed results with is_page() WordPress function, when using $this, or self
39. Read page- or post-content across different builder-plugins
40. How to redirect Old Post URL to new Post and keep Old post Comments?
41. Can wp_script_is used in pluginA check if a script is being enqueued/registered from pluginB?
42. Modifying Footnote Plugin for Descriptive Title Attributes
43. New Plugin: Post update pushes a copy as a revision
44. Getting media library popup in custom plugin admin page
45. Create or Update thousands of woocommerce products via PHP
46. How to Replace Words with Hypertext Link But Ignore Previously Existed Links?
47. send_headers don’t work on wordpress multisite
48. jQuery function didn’t work in my plugin
49. bulk change of image setting “link to” to “link to: image url “
50. Placement of Code in Plugin for hooking `save_post`
51. Display a text message if the field is not found and not if found
52. Sanitizing, Validating and Escaping in WordPress (Plugin)
53. Escape when echoed
54. The Point of Using apply_filters()
55. Plugin exceeds memory limit
56. How to get post URL in the_content filter?
57. Add a plugin before main container
58. How to get subscription key or id using Woocommerce Subscriptions [closed]
59. How to get variables from fucntion.php to my plugin files
60. How to include code into functions.php file via a plugin
61. Avoiding Duplicate function names in Post Loop (WP_Footer script)
62. Missing argument 3 for wp_register_sidebar_widget()
63. Write to / remove from default .htaccess file from plugin?
64. Update Option Error: Notice: Undefined index
65. How to add class in plugin only for network site?
66. Plugin Development sqlite or WordPress’ database
67. How to cancel WordPress’ action/filter when using OOP with anonymous callback
68. How to trigger $_GET request within admin plugin page?
69. How to generate video out of images via WordPress plugin
70. plugin development: problem with functions
71. How can I get WordPress to save comments in markdown format?
72. add_query_arg not working
73. WooCommerce get_price returning wrong price when used via ajax
74. How to ‘clone’ a wp plugin to make small changes
75. Open Post Thumbnail in New Child Theme File in WordPress
76. Shortcode button dosent work for all posts. Work for first post only
77. Where should I save an API key of my user when installing my plugin?
78. Is Wrapping intval() Around esc_attr() Redundant for Escaping Input?
79. Programatically download a plugin
80. Redirecting to home page after login as custom role WordPress
81. Add keywords meta to index.php page
82. Custom form action to handle data inside a plugin
83. Self deactivate plugins after an action occurs
84. Pulling data from custom plugin settings using PHP shortcode and Javascript
85. Executing my function once on a specific time
86. How to periodically scrape and cache strings from remote txt files. – My First Plugin
87. How to stop or remove an action being called inside a function of an extended class
88. WP Post Template – Templates in own folder
89. Avoid class name collision when using third party libraries in plugins?
90. Theme my Login plugin, how to update fields
91. Date calculations from 2 custom fields
92. How would I go about creating a user ranked post popularity page?
93. Redirection of users away from wp-admin (but not administrators)
94. Using a custom plugin to capture input data via Ajax and PHP
95. Display post lists in 2nd paragraph
96. Using a post-signup hook to get user details
97. How to enable specific plugin only based around shop manager role?
98. Override Plugin Script Fucnction in WordPress
99. code is working properly in Core PHP but writing coding in WordPress
100. Creating a custom post type, adding custom meta fields, preventing all future editability of posts of this type