linked_list.html

<script>
  var module = WebAssembly.instantiateStreaming(fetch("linked_list.wasm"), {});
</script>

linked_list.wat

;; To compile this wat to wasm, you can use Binaryen:
;;
;;   wasm-as -all linked_list.wat -o linked_list.wasm
;;
(module
  (type $Node (struct (field $next (ref null $Node))))

  (global $global (mut (ref null $Node)) (ref.null $Node))

  (export "global" (global $global))

  (start $main)

  (func $main
    (local $i i32)
    (loop $loop
      (global.set $global
        (struct.new $Node
          (global.get $global)
        )
      )
      (local.set $i
        (i32.add
          (local.get $i)
          (i32.const 1)
        )
      )
      (br_if $loop
        (i32.le_u
          (local.get $i)
          (i32.const 1000)
        )
      )
    )
  )
)