br

(module ;; import the browser console object, you'll need to pass this in from JavaScript (import "console" "log" (func $log (param i32))) ;; create a global variable and initialize it to 0 (global $i (mut i32) (i32.const 0)) (func (loop $my_loop ;; add one to $i global.get $i i32.const 1 i32.add global.set $i ;; log the current value of $i global.get $i call $log ;; if $i is less than 10 branch to loop global.get $i i32.const 10 i32.lt_s br_if $my_loop ) ) (start 1) ;; run the first function automatically ) 

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

;; 建立一個 loop 區塊，讓程式在之後可以跳回 (loop $my_loop ;; 跳回至 loop。 ;; 在絕大多數的情況，你會希望其在特定條件下才回到 loop ， ;; 否則程式就會進入無限循環。 br $my_loop )