PlutoScript

Write Pluto, a Lua dialect, anywhere JavaScript works.

Usage

You simply need to load a suitable WASM build of libpluto, and then PlutoScript itself:

<script src="https://pluto-lang.org/wasm-builds/out/libpluto/0.9.5/libpluto.js"></script>
<script src="https://pluto-lang.org/PlutoScript/plutoscript.js"></script>

Example

A simple example is the Base32 Encoder tool that is available online here.

Barring the script tags needed for PlutoScript's usage, this is the entire source code:

<textarea id="plain"></textarea>
<textarea id="encoded"></textarea>
<script type="pluto">
    document.getElementById("plain"):addEventListener("input", function()
        document.getElementById("encoded").value = require"base32".encode(document.getElementById("plain").value)
    end)
</script>

JavaScript API

• pluto_require(src)
• pluto_load(code)
• pluto_invoke(name, ...args) can be used to invoke a global Pluto function
• pluto_give_file(name, data) writes a string or Uint8Array for Pluto code to read from the file with the given name

Pluto API

• js_invoke(name, ...args) can be used to invoke a global JavaScript function
• window.__index.__call: You can call any method on 'window', e.g. window.alert("Hello")
• document.getElementById(x) returns an Element instance with path $"#{x}"
• document.querySelector(x) returns an Element instance with path x
• Element.__index/Element.__newindex: You can read and write any property of an Element, e.g. .value
• Element:addEventListener(evt, func)
• Element:addClass(name)
• Element:removeClass(name)
• Element:setAttribute(name, value)
• Element:removeAttribute(name)