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  1. WebAssembly
  2. WebAssembly instruction reference
  3. WebAssembly memory instructions
  4. Size

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

Size

The size instruction, returns the amount of pages the memory instance currently has, each page is sized 64KiB.

Try it

Syntax

;; get the amount of pages the memory has
memory.size
Instruction Binary opcode
memory.size 0x3f

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

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