index.md

---

title: end
slug: WebAssembly/Reference/Control_flow/end

---

{{WebAssemblySidebar}}

end is used to end a block, loop, if, or else. In the other examples we used the s-expression syntax which doesn't require the end, so you won't find it in the other examples here. However, it's still useful to know about since this is what the browsers display in devtools.

{{EmbedInteractiveExample("pages/wat/end.html", "tabbed-taller")}}

Syntax

i32.const 0
if
  ;; do something
end

Instruction	Binary opcode
end	0x0b