Drop

(module
 (import "console" "log" (func $log (param i32)))
 (func $main
 ;; 将两个值加载进栈中
 i32.const 10
 i32.const 20
 ;; 丢弃栈顶项(`20`)
 drop
 call $log ;; 打印栈顶值(`10`)
 )
 (start $main)
)

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

;; 将多个值推入栈中
i32.const 1
i32.const 2
i32.const 3
;; 丢弃栈顶项(`3`)
drop
;; 现在栈顶项是 `2`

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This page was last modified on ⁨2025年4月18日⁩ by MDN contributors.