hugo/docs/content/en/functions/strings.Contains.md

title	description	categories	menu	keywords	signature	aliases	relatedfuncs
strings.Contains	Reports whether a string contains a substring.	functions	docs parent functions	string strings substring contains	strings.Contains STRING SUBSTRING		strings.ContainsAny

{{ strings.Contains "Hugo" "go" }} → true

The check is case sensitive:

{{ strings.Contains "Hugo" "Go" }} → false