How to anonymously retrieving sharepoint list using ECMA script

Question

I am using Sharepoint 2013. I am trying to retrieve a sharepoint list that contains list of all products from the server as an anonymous user using ECMA script/ JavaScript. I understand that it can be done using admin privileges and elevated rights. However, I want the user to be anonymous.

Can anyone give some suggestion how it can be done ??

edit 1: I am trying to achieve this feat purely using scripting code(ECMA/ JS). Is their possibly any way to do it ?

Answer 1

Try to set list AnonymousPermMask using PowerShell below, then use JSOM to get list items.

add-pssnapin microsoft.sharepoint.powershell
$siteurl = "[your site URL]"
$listname = "[your list name]"
$a = (get-spweb $siteurl).lists | where title -eq $listname
$a.AnonymousPermMask​64 = "ViewListItems, UseClientIntegration, UseRemoteAPIs"

As a workaround, we can create a custom web service to get list items from list that allows for anonymous access.

We can also create SharePoint Add-ins that can be used by anonymous users.

Refer to: Create SharePoint Add-ins that can be used by anonymous users