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perf(图片加载): 优化图片加载逻辑，简化解码处理 

移除冗余的解码检查逻辑，直接使用现代浏览器的异步解码特性
添加fetchPriority优化加载优先级，提升页面性能
This commit is contained in:
tikkhun 2025-12-13 23:23:49 +08:00
parent 6618f67be2
commit 4e59e868aa
1 changed files with 3 additions and 8 deletions
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11
js/shapes/utils.js
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@ -21,14 +21,9 @@
const img = new Image(); const img = new Image();
const record = { img: img, ready: false }; const record = { img: img, ready: false };
window.YooneSnowImageCache[imageUrl] = record; window.YooneSnowImageCache[imageUrl] = record;
img.onload = function(){ try { img.decoding = 'async'; } catch(e) {}
var decoder = img.decode && typeof img.decode === 'function' ? img.decode() : null; try { img.fetchPriority = 'low'; } catch(e) {}
if (decoder && typeof decoder.then === 'function'){ img.onload = function(){ record.ready = true; };
decoder.then(function(){ record.ready = true; }).catch(function(){ record.ready = true; });
} else {
record.ready = true;
}
};
img.onerror = function(){ img.onerror = function(){
// 加载失败 从缓存移除避免重复错误 // 加载失败 从缓存移除避免重复错误
delete window.YooneSnowImageCache[imageUrl]; delete window.YooneSnowImageCache[imageUrl];