HTL Scripting

HTL (HTML Template Language) is AEM's server-side template language. It replaces JSP for AEM components. HTL files are valid HTML — all logic lives in ${expressions} and data-sly-* attributes which are stripped from output.

Key mental model: HTL = HTML + expressions (${...}) + block attributes (data-sly-*). There is no imperative code in HTL. All business logic belongs in Java (Sling Models) or JavaScript Use-API objects, referenced via data-sly-use.

Expressions

Syntax: ${ expression @ option1, option2=value }