WebReflection

FE vs BE

TL;DR enough of this kind of nonsense

---

I've been in the field for ~20 years and started as BE developer, and this is a reference for people thinking that because they are on the BE side, they're somehow entitled to:

• earn more money
• feel superior about FE developers
• joke about JavaScript or minimize the FE effort in any way

jonikorpi

// https://github.com/calebdwilliams/construct-style-sheets
import "construct-style-sheets-polyfill";

export default strings => {
  if (document.readyState === "loading") {
    window.addEventListener("DOMContentLoaded", () => adopt(strings));
  } else {
    adopt(strings);
  }
};

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent