These are unoffical "javascript bindings" to liblouis created by cross compiling liblouis using emscripten.

File	Filesize	Description	Version
liblouis-tables-embeded.js	29.8MB	All tables embeded in file	commit 7e363d0 (> 3.0.0)
liblouis-no-tables.js	1.47MB	Tables not included	commit 7e363d0 (> 3.0.0)

API Overview

Method	Easy wrapper	Direct call
lou_version	✔	✔
lou_translateString	✔*	✔
lou_translate	✖	✔
lou_backTranslateString	✔*	✔
lou_backTranslate	✖	✔
lou_hyphenate	✖	✔
lou_compileString	✖	✔
lou_getTypeformForEmphClass	✖	✔
lou_dotsToChar	✖	✔
lou_charToDots	✖	✔
lou_registerLogCallback	✖	✔
lou_setLogLevel	✖	✔
lou_logFile	✖	✔
lou_logPrint	✖	✔
lou_logEnd	✖	✔
lou_setDataPath	✖	✔
lou_getDataPath	✖	✔
lou_getTable	✔	✔
lou_checkTable	✔	✔
lou_readCharFromFile	✖	✔
lou_free	✔	✔
lou_charSize	✔	✔

* only BMP tested

Usage Examples

// Using easy_wrapper.js:
console.info("Liblouis Version:", liblouis.version());
// Should print:
// Liblouis Version: 3.0.0

// Using liblouis-(...).js directly:
console.info("Liblouis Version:", Module.ccall("lou_version", "string"));
// Should print:
// Liblouis Version: 3.0.0

var unicode_braille = liblouis.translateString("tables/unicode.dis,tables/de-de-g0.utb", "10 Ziegen")
// Variable should contain:
// ⠼⠁⠚ ⠵⠊⠑⠛⠑⠝
console.log(liblouis.backTranslateString("tables/unicode.dis,tables/de-de-g0.utb", unicode_braille))
// Should print:
// 10 ziegen

Note that the Unicode Braille Patterns in line 3 of example 2 may not be displayed in your browser or text editor.

Downloading Table Files on Demand

After including liblouis-no-tables.js and easy_wrapper.js call with an absolute or relative URL to the table directory:

// enable and set base url for tables
liblouis.enableOnDemandTableLoading("tables/");

// call any API (direct call or using the easy-wrapper) method:
var unicode_braille = liblouis.translateString("tables/unicode.dis,tables/de-de-g0.utb", "10 Ziegen")
// Makes 12 XHR-Requests for table files. The variable should contain the same
// content as above:
// ⠼⠁⠚ ⠵⠊⠑⠛⠑⠝