nop: Wasm text instruction

nop stands for no-operation. It literally does nothing.

Try it

(module  (func (export "do_nothing")    nop  ))

const url = "{%wasm-url%}";await WebAssembly.instantiateStreaming(fetch(url)).then((result) => {  result.instance.exports.do_nothing();});

wat

nop

Instruction	Binary opcode
`nop`	`0x01`

This page was last modified on⁨Nov 23, 2025⁩ byMDN contributors.