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按照谷歌提供的衡量网页质量的自动化工具[灯塔](https://developers.google.com/web/fundamentals/performance/get-started/measuringperf-2?hl=zh-cn)提供的指标来看,主要有以下几个类目的指标:
### Performace
1 ['First Contentful Paint'](https://…
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WebPageTest includes their own audit for whether sites are shipping down progressive JPEGs (images that are delivering with scans of increasing quality). This is something that may be interesting to e…
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Hi,
Sir there is one issue. i have face is that pagespeed.
[Largest Contentful Paint (LCP)]
9.2 s
[Interaction to Next Paint (INP)]
421 ms
[Cumulative Layout Shift (CLS)]
0.02
OTHER NOTA…
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Hi,
Please see the issue shown on video here:
https://www.loom.com/share/d172a32f5f6a447a99ecd2942a9daeb9
My init is:
`ll = new LazyLoad({
// Assign the callbacks defined above
…
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# OpenGraph Studio issue
### Reason/Context
Thanks to the `?url=` and `?base64=` query param, Studio can load most of files (yes, not all of them, see [https://github.com/asyncapi/studio/issues/…
smoya updated
1 month ago
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Warnings like `Warning: Expected server HTML to contain a matching in .` occurs because html was rendered with no url params on server side, but rendered with url params in client side.
I think Ne…
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## 前言
近年移动业务喷井式爆发,伴随着互联网人口红利的萎缩,用户更加青睐效率高体验优的站点,页面「到达」快慢直接影响了用户的体验,「性能」变得越来越重要。google 大数据统计观察发现,移动端用户对页面加载慢的容忍度远低于 PC 端,投放页面首屏加载时间从 2s 钟延迟到 3s 会造成 9.4% 的 PV 下降,8.3% 的跳出率增加以及 3.5% 的转化率下降。性能优化具有的商业价值…
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因为最近也在积极的准备面试内容,但是被人问到你前端优化到底优化了什么的时候,我发现我没有办法从一个系统的角度来回答这个问题。乘着今天刚好要写点东西,就聊聊这个吧。首先说明一下,以下的各种事项我都会引入自己的角度与项目进行阐述,迫于某些敏感信息,将使用字母代替项目名。
# 应该从哪个方向思考?
有一道很泛用的面试题,就是一个页面从输入地址到展示,经过了哪些步骤。其实这道题就可以大概拆分成…
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Now that we have an `await` template primitive, it makes sense to have a streaming renderer:
```js
require('svelte/ssr/register');
const app = express();
const SomeRoute = require('./component…
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I thought about this idea too, but it's not clear from the explainer why this is considered a worse alternative to FCP? If the intention is to let analytics providers report their metrics, wouldn't le…