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web performance optimizations (critical rendering path 关键路径渲染 (DOM (the…
web performance
optimizations
great websites
understand your users
what they want to achieve
how browsre works
tool
pagespeed insights
phone debuging
chrome
performance
goal
pages rendered less than one second
critical rendering path
关键路径渲染
DOM
the browser go through to convert html css an javascript to actual px on screen
start
process the html and building the dom
charactors
tokens
nodes
dom
dom
browser incrementally build the dom
this is the optimize
cssDOM
render tree
paint
layout
chrome performance 面板