What is the best way to add custom JavaScript to the standard Create/Edit/Details pages like Contacts, Accounts etc
9623
End of javascript sidebar workarounds? (Salesforce Classic / Aloha)
158517
Put a JavaScript to Sharepoint
85542
how to add javascript with #attached and hook_page_alter
6274
How can I add a direct link to the edit account settings page in a menu?
95695
Various script type attributes and vanilla js, what makes difference in user agents
125280
How to implement "Add another item" for custom forms?
96860
Javascript document write overwriting page?
54752
How to make an HTML  element editable cross-browser?
157689
Edit account creation message
42695
How to place Contact form in block?
96681
Can I send a user to an edit page which, when they press Save, will send them to the detail page?
137521
Improved Help Center - site-specific pages and site-specific edits to all pages
136263
How To Use a Standard Lightning Page Component in a Lightning Web Component?
138813
How to hide Authoring information,Revision information,Publishing options tabs in create/edit node for any content type
44048
How do I know if the page is in Edit Mode from JavaScript?
116771
How can i integrate custom html form in facebook page
152447
How to apply custom headers/footers on pages with new chapters?