Js_of_ocaml

      
A compiler from OCaml bytecode to Javascript.

      
It makes OCaml programs that run on Web browsers. It is
        easy to install as it works with an existing installation of OCaml,
        with no need to recompile any library. It comes with bindings for a
        large part of the browser APIs.

      
This web-based OCaml toplevel is compiled using Js_of_ocaml.

      
Command

      

        
          

            Enter/Return
            Submit code
          

          

            Ctrl + Enter
            Newline
          

          

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            Ctrl + l
            Clear display
          

          

            Ctrl + k
            Reset toplevel
          

          

            Tab
            Indent code
          


        
      

      
Try to execute samples

      
 Graphics: PingPong  Graphics: Draw chars Graphics: Draw  Reactive dom  Mutually recursive module  Mutually recursive function  Overview 

      
      
See the generated javascript code

      
(function(globalThis)
  {"use strict";
   var runtime=globalThis.jsoo_runtime;
   function caml_call2(f,a0,a1)
    {return f.length == 2?f(a0,a1):runtime.caml_call_gen(f,[a0,a1])}
   var
    global_data=runtime.caml_get_global_data(),
    Stdlib_Format=global_data[654],
    Toploop=global_data[20473],
    cst_print_unit=global_data[20518],
    cst=global_data[20519];
   function _a_(fmt,param){return caml_call2(Stdlib_Format[13],fmt,cst)}
   return caml_call2(Toploop[2],cst_print_unit,_a_)});