Js_of_ocaml

Js_of_ocaml is a compiler from OCaml bytecode programs to JavaScript. It makes it possible to run pure OCaml programs in JavaScript environments like browsers and Node.js. A companion compiler, wasm_of_ocaml, targets WebAssembly.

Manual

Overview — what Js_of_ocaml is and how to use it
Installation
Quick Start
JavaScript interoperability
PPX syntax extension and JSON derivation
Export OCaml code to JavaScript
Error handling
Lwt support
Command-line options, compilation modes, JavaScript primitives, tail-call optimization, effect handlers, runtime representation
Targeting older browsers
wasm_of_ocaml overview and writing Wasm primitives
Build a toplevel, debug a program, performance, contribute
Examples and projects

API reference

See the API overview for the full list of modules, or jump to the main libraries: Js_of_ocaml.Js, Js_of_ocaml.Dom_html, Js_of_ocaml_lwt.Lwt_js_events, Js_of_ocaml_tyxml.Tyxml_js.