If you need JSDoc documentation, you need to install or copy over JSDoc package. As the package is JavaScript based, you need to have node.js installed on your computer prior, as JS runtime environment. If you have node.js installed on your work computer you may install the package
npm install -g jsdoc
or just copy (from your home computer) "node_modules/.bin" and "node_modules/jsdoc" folders to anywhere on your work computer. After generate your documentation by using command line
.bin/jsdoc path/to/file.js
More information on the topic is over here: How do I use JSDoc on Windows?.
Note: I am not aware any online service to generate JS Documentation, but even if I would, I wouldn't advise you to use it. The script which you wrote is ypur (or your company) intellectual property and send it to any 3rd party service, even to generate documentation sounds weird. I would generate documentation at home and bring it to work in your case.