Barawon yana canza canjin CSS zuwa pixels ta hanyar tube, da canja canja daban-daban zasu yi halin daban-daban (kastu ko rasanta) matakai:
Style → Layout (reflow) → Paint → Composite
Barawon yana canza canjin CSS zuwa pixels ta hanyar tube, da canja canja daban-daban zasu yi halin daban-daban (kastu ko rasanta) matakai:
Style → Layout (reflow) → Paint → Composite
/* ❌ trigger LAYOUT (reflow) — costly, recalculates geometry every frame */
width, height, top, left, margin, padding, font-size
/* ⚠️ trigger PAINT — repaint pixels */
color, background, box-shadow, border-radius
/* ✅ trigger only COMPOSITE — GPU, no layout/paint */
transform, opacity
Gari ne matsayi mafi mahimman sadarwa: yi animate transform da opacity, ba width/top/margin. Animating layout kadarorin ke sake gudu layout a kowane frame (jank); transforms suna composite ta GPU (mai jiya 60fps).
/* ❌ janky */ @keyframes a { to { left: 300px; width: 200px; } }
/* ✅ smooth */ @keyframes b { to { transform: translateX(300px) scaleX(2); } }
.animated { will-change: transform; } /* promotes to its own GPU layer ahead of time */
Yi amfani da will-change ne akan abubuwa waɗanda za a yi animate - overusing shi bata ajiya ta cikakken ajiya ta hanyar ƙirƙire yawa layers.
// ❌ read-write-read-write forces multiple synchronous reflows
for (const el of els) { el.style.width = el.offsetWidth + 10 + "px"; }
// ✅ batch reads, then writes
const widths = els.map(el => el.offsetWidth);
els.forEach((el, i) => el.style.width = widths[i] + 10 + "px");
- contain: layout/paint — isolate a subtree so changes don't reflow the whole page
- content-visibility: auto — skip rendering offscreen content
- minimize deep selectors and huge unused stylesheets
Sautin sadarwa ya kasance kusan game da ba sa yi layout sau da sau.
Sanin cewa transform/opacity sune composite-only (rasanta) yayin da width/top/margin suka tilasta reflow (tsada) — tare da guje layout thrashing da amfani da contain/content-visibility — abin da ke hanyar gizo animations a 60fps da shafuka da ke kamawar da sauri.