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  • Play New
  1. WebAssembly
  2. WebAssembly instruction reference
  3. WebAssembly numeric instructions
  4. Const

In this article

  • Try it
  • Syntax
  1. WebAssembly home page
  2. Tutorials
    1. WebAssembly concepts
    2. Compiling from C/C++ to WebAssembly
    3. Compiling from Rust to WebAssembly
    4. Using the WebAssembly JavaScript API
    5. Understanding WebAssembly text format
    6. Converting WebAssembly text format to wasm
    7. Loading and running WebAssembly code
    8. Exported WebAssembly functions
  3. JavaScript interface
    1. WebAssembly
    2. WebAssembly.Module
    3. WebAssembly.Global
    4. WebAssembly.Instance
    5. WebAssembly.Memory
    6. WebAssembly.Table
    7. WebAssembly.Tag
    8. WebAssembly.Exception
    9. WebAssembly.CompileError
    10. WebAssembly.LinkError
    11. WebAssembly.RuntimeError

In this article

  • Try it
  • Syntax

Const

The const instructions, are used to declare numbers.

Try it

Syntax

wasm

;; push `5` onto the stack
i32.const 5
Instruction Binary opcode
i32.const 0x41
i64.const 0x42
f32.const 0x43
f64.const 0x44

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This page was last modified on Feb 23, 2023 by MDN contributors.

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