openhab-docs/_addons_transformations/javascript/readme.md

id	label	title	type	description	since	install
javascript	JavaScript	JavaScript - Transformation Services	transform	Transform an input to an output using JavaScript.	2x	auto

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JavaScript Transformation Service

Transform an input to an output using JavaScript.

It expects the transformation rule to be read from a file which is stored under the transform folder. To organize the various transformations, one should use subfolders.

Example

Let's assume we have received a string containing foo bar baz and we're looking for a length of the last word (baz).

transform/getValue.js:

(function(i) {
    var array = i.split(" ");
    return array[array.length - 1].length;
})(input)