loadjs

Hi Everyone - author here. I just wanted to give you some background on the project. JohnnyDepp came out of a feature request I got on another project called LoadJS (https://github.com/muicss/loadjs) which is an async loading library. The request was for a higher-level dependency manager that: 1. lazy-loads files 2. handles JS/CSS/images 3. handles nested dependencies 4. makes it easy to manage dependencies among team members 5. is extremely lightweight I realize that many teams use RequireJS to manage dependencies but I saw an opportunity to make a library that could accomplish many of the same things but with a much smaller footprint and a simpler API. I hope you'll give it a try and let me know what you think!

Yes. What you should do is use an asynchronous module loader. There are many small standalone ones like loadjs [1]. But the more widely used tools such as webpack also suppprt this as code splitting [2]. In general you want to avoid sync loads of js assets because depending on how the server serving the asset hangs it can cause the webpage to hang as well. For example, if the server responds with a 404 right away then there are no problems. But if the server does not respond and leaves the connection open the browser will just wait the max time. [1] https://github.com/muicss/loadjs/blob/master/README.md [2] https://webpack.js.org/guides/code-splitting/

We use the `onerror` handler to detect load errors on IE9: https://github.com/muicss/loadjs/blob/master/src/loadjs.js#L...

The original bare-bones version of LoadJS was down to 455 bytes and grew to 710 as we added some useful features (e.g. CSS loading, async false support, load retries). Initially I was hesitant to add CSS support because handling load errors across browsers is very tricky but I think we came up with a good solution [1] that is tested down to IE9 [2]. [1] https://github.com/muicss/loadjs/blob/master/src/loadjs.js#L... [2] https://github.com/muicss/loadjs/blob/master/test/tests.js#L...

I just shaved off another 3 bytes so LoadJS is now 503 bytes (minified + gzipped). HN - If you see a way to get below 500 bytes please let me know! https://github.com/muicss/loadjs/blob/master/src/loadjs.js

Here are some of the changes: * Replaced for-loops with while-loops [1] * Removed un-necessary code in the script loading function [2][3] * Removed setTimeout wrapper [4][5] [1] https://github.com/muicss/loadjs/blob/master/src/loadjs.js#L... [2] https://github.com/muicss/loadjs/blob/master/src/loadjs.js#L... [3] https://github.com/muicss/loadjs/blob/8d380e1f6c2af431b08088... [4] https://github.com/muicss/loadjs/blob/master/src/loadjs.js#L... [5] https://github.com/muicss/loadjs/blob/8d380e1f6c2af431b08088...