I recently created a JavaScript file with over 6000 lines of code for various sections of my website. I'm debating whether to keep it as one large file or break it up into smaller parts and call them in their respective sections. What do you think?
I recently created a JavaScript file with over 6000 lines of code for various sections of my website. I'm debating whether to keep it as one large file or break it up into smaller parts and call them in their respective sections. What do you think?
My recommendation would be to go with a single large image, as it only involves making one HTTP request. Plus, if the server setup is optimal, it will be cached after the initial load.
The impact of the HTTP request cost, visitor likelihood to access specific JS sections, and bandwidth savings for other pages all play a role in determining the overall performance.
When deciding whether to serve one large file or break it up into smaller parts, there are a few things to consider. If your server has gzip compression turned on, serving one large file is likely the better option.
However, breaking the file into smaller parts can improve readability and maintainability of the code. In this case, you can still serve the entire script in a single request by using a custom servlet or other server-side logic to concatenate all the parts together before sending the result to the client.
Recently, it seems like breaking it down into smaller files and loading only the necessary ones in parallel is the most effective approach, utilizing a JS loader such as Head JS (visit the link and look under "Combining scripts" to learn more about the performance benefits).
Alternatively, you could consider using a different loader like RequireJS.
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