Page load speed is one of the most important factors in user experience.
If a website takes too long to load, users leave — no matter how good the design or features are.
Improving page load speed means making sure that JavaScript runs efficiently and loads only what is needed, when it is needed.
Why Page Load Speed Matters
- Fast pages keep users engaged
- Slow pages increase bounce rate
- Search engines prefer fast websites
- Mobile users expect quick loading
- Performance affects business success
Speed is not just technical — it is business-critical.
This code runs as soon as the page loads and blocks the browser.
The user must wait until the script finishes before seeing the page.
By delaying heavy tasks, the page can load first and show content to the user.
This improves the perceived speed of the website.
Improving page load speed is about making smart decisions about when and how JavaScript runs.
By applying these techniques, students gain the ability to build fast-loading, responsive, and professional web applications that deliver great user experience.