Check current login user permission using JSOM in SharePoint 2013/2016

Hi All,


One of the easiest way to check the current logged in user privilege in JSOM

if (SP.PageContextInfo.get_webPermMasks().has([26])) {  

   //your code goes here... 

}

Below are the list of permission types and it's index. 

Permission Type	Index
emptyMask	0
viewListItems	1
addListItems	2
editListItems	3
deleteListItems	4
approveItems	5
openItems	6
viewVersions	7
deleteVersions	8
cancelCheckout	9
managePersonalViews	10
manageLists	12
viewFormPages	13
anonymousSearchAccessList	14
open	17
viewPages	18
addAndCustomizePages	19
applyThemeAndBorder	20
applyStyleSheets	21
viewUsageData	22
createSSCSite	23
manageSubwebs	24
createGroups	25
managePermissions	26
browseDirectories	27
browseUserInfo	28
addDelPrivateWebParts	29
updatePersonalWebParts	30
manageWeb	31
anonymousSearchAccessWebLists	32
useClientIntegration	37
useRemoteAPIs	38
manageAlerts	39
createAlerts	40
editMyUserInfo	41
enumeratePermissions	63
fullMask	65

:) coding

Regards
Ratsub