What are the options for customizing sharepoint 2019 (on-prem) list forms?

Question

Hello,
I'm looking for ways to customize sharepoint list forms on our sharepoint 2019 environment. Its easy to create a list and use it for simple functions but looking for ways to customize the forms such as making some columns visible on the form to certain groups, show certain columns based on the value of another column etc.
How to achieve this?

Answer 1

@Kummari, Rani

1.Per my knowledge, making some columns visible in the form to certain groups is not available.

2.You could use JSON formatting to hide the value of one column according to the value of another column. For example, when the value of column B is equal to 1, then SharePoint will hide the value of column A.

(1)Select the column -> Column settings -> Format this column.

(2)Add following codes.

{  
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",  
  "elmType": "div",  
  "txtContent": "@currentField",  
  "style": {  
  "display": "=if([$B]=='1','none','')"  
  }  
}  

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Answer 2

do you use modern or classic views? For modern you may use JSON formatting like it was mentioned, for classic you may edit list forms (same way as publishing pages), add content editor web part to the top web part zone and add necessary javascript there within <script type="text/javascript"></script> tags. In this script you may implement logic for customizing list forms.
In OTB Sharepoint it is not possible to set fields visibility based on group membership so it should be done via custom code.