Enhance Web Performance

Enhance Web Performance Adam Lu [email_address] Y!ID: adamlu86 http://adamlu.com/

The Performance Golden Rules 80-90% of the end-user response time is spent on the front-end.

High Performance Web Sites ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Make fewer Http Requests ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Style sheets at the top ,[object Object],[object Object],[object Object],[object Object]

Placing scripts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Avoid CSS Expressions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Make JS &CSS external ,[object Object],[object Object],[object Object],[object Object]

Minification ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Make Ajax cacheable ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Miscellaneous Tips ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Miscellaneous Tips ,[object Object],[object Object],[object Object],[object Object],[object Object]

There are four main reasons why a script can take too long to execute ,[object Object],[object Object],[object Object],[object Object]

Too much happening in a loop ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Too much happening in a function ,[object Object],[object Object]

Too much happening in a function ,[object Object],[object Object],[object Object],[object Object]

Too much recursion ,[object Object],[object Object],[object Object],[object Object],[object Object]

Too much DOM interaction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

perform as many changes as possible outside of the live DOM structure ,[object Object],[object Object]

remove a node from the live DOM before operating on it ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Proccess the HTMLCollection type ,[object Object],[object Object],[object Object],[object Object]

Fastest way to build an HTML string ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Javascript good practice ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Javascript good practice ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],More On http://www.javascripttoolbox.com/bestpractices/

Minify HTML ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Css Guidelines ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Guidelines for Efficient CSS ,[object Object],[object Object],[object Object],[object Object],https://developer.mozilla.org/en/Writing_Efficient_CSS

Tools of Analyzing Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Enhance Web Performance

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Enhance Web Performance