In my app.js file, I import someComponent.js. This someComponent.js file then imports someStyles.css. However, app.js will only use or render someComponent.js when a button is clicked.
So, the question arises: When will the user's browser load and apply someStyles.css? Will it load right away when the page loads, regardless of whether the button is pressed, or will it wait to request and load the CSS file until the component is actually rendered?
Providing a precise answer to this question can be challenging, as it hinges on the specific setup and construction of your application. The outcomes may vary during development compared to when the application is live.
Nevertheless, you can verify this independently by utilizing your browser's developer tools.
All major browsers feature developer tools with a dedicated section for examining "Network" traffic. By navigating to the "Network" tab in your developer tools and refreshing the page, you can observe the sequential retrieval of resources from the server.
You could even experiment with network throttling to witness its impact on the webpage.
Explore:
https://i.sstatic.net/uTxME.png
You may also find it beneficial to explore more about code-splitting as a method to alter the loading timing of components.
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