How can a loader option be added on the create dialog box

[Maru Sravan]

In this context, the elaboration of the question is as follows: My use case involves two custom fields that depend on the API response. Due to delays in receiving the response, I intend to incorporate a loader option to indicate progress until the response is received.
How to do this ?

[Brant Schroeder]

@Maru Sravan you would have to write the loader in JavaScript and then implement it.  I would suggest seeing if you can create one that can be added through the announcement field.  If that does not work you would have to edit Jira's Java.  This means that you will have to do this every time you upgrade.  My guess is that you should be able to use CSS and JavaScript on the create issue button click and then monitor the loading of a specific object and when it loads get rid of the loader.  You can then host the JavaScript and CSS in the Jira announcement so it applied when the create button is clicked.