全局获取

(module
  (import "console" "log" (func $log (param i32)))
  (global $var i32 (i32.const 10))
  (func $main

    global.get $var ;; load the value of $var variable onto the stack
    call $log ;; log the result

  )
  (start $main)
)

const url = "{%wasm-url%}";
await WebAssembly.instantiateStreaming(fetch(url), { console });

;; load the value of a global variable onto the stack
global.get $val