һ
 ע

QQ¼

ֻһٿʼ

ƼĶ

+
̳ WEBҳǰ뿪 ҳ

[ת] վٶҳʱķ

[]
48404 happy175 2014-12-2 09:49:16
| ʾȫ¥
1F

ϲ̫ʱȴҳĴ򿪣ȴԽûֱܻӹرҳͻʧܶΣؼֵҳĴٶҲйϵҪûϣûȺãվͺЩҾбҪȥҳĴٶȣҪ̫ijɱͶ룬ֻҪƽʱעһЩСɾˣ20ַվٶҳʱ

1ҳHTTP

ȽֱӵҪٵҳ桢ļ

A.ʹcssʽƵʱ򣬾backgroundܶͼļÿbackgroundͼٲ1HTTPһΪҳûʹbackgroundرͼҪ״Բcss1õbackground-positionرͼǽҪƵصĶͼƬϳΪ1ͼƬҪʱʽؼɽⲿͼƬصHTTPΪ1

B.Image maPSҲȽϳãֻͬ1ʹá

C.Inline imagesټںСܼ򵥵ͼȴǺʵõģ﷨׼գtools.ietf.org/html/rfc2397

2ʹCDN(Content Delivery Network)

ڹCDNҵĹ˾ܶ࣬򵥽ǽͼƬƵɢCDN֮ܵûʱܾͽصЩļӶﵽٵĿģͬʱܼԼվĸء

3ļڻ򻺴ͷ

ͬһûƵʵͼƬJsűļȿApacheNginx仺 ʱ䣬24Сʱʱ䣬ûڷʹҳ֮ٴηʱͬһͼƬJSظأӶHTTPûٶ ͬʱҲ½nginxлƵӣ

4gzipѹ

ҶȽ˽⣬Ҫѹ䵽ͻٽѹϴ СͨڷϵApacheNginxֱӿãҲԴӴǶֱôļͷgzipãҲԴ ؾ豸ֱáҪǣû΢ӷĸ

5cssʽļͷ

öûҳݱȽӴȽҳ𲽳ֵͬʱԻᱣָʽϢӰҳС

6Javascriptűļĩβ

ܶJavascriptűִЧʵ£еĵ3ű޷룬 ЩűõҳȽϿǰλãܻᵼԼվٶ½޷أһ㽫ЩűҳļĩβһҪ ǰĽűҪνġ롱ʽأҳɺټأֹӰ쵽ҳļٶȡ

7ʹCSSű(CSS Expressions)

ʱΪҪcssIJ̬ı䣬ܻcss expressionʵ֣òʧʹûԼأԲҪı䣬ʹJavascriptűȥʵ֡

8cssjavascriptⲿ

cssjsݱȽӴ󣬾Ҫдͬ1ҳȥⲿȽ׵Ϊcssjsļл档

9ѹJavascriptCSS

һjscssļдڴĿո񡢻СעͣЩĶܹѹ紫䡣ⷽĹҲкܶ࣬һԱ汾ù汾2ļȽϣһѹܴﵽ50%ϣٵDZȽϿɹ۵ġ

͸ոİɣִ뻹ûнŻѹĿǰyslowֻܴﵽD,ʱвŻﵽCȼӦⲻ

10301302ת

11õĿάϰߣűظ

12ETags

13Ajaxû

ʹÿԲDiscuz̳룬ڴʹõAjaxö˻ ÷ʽһøʽʵ֣עе

仯ʹûļ仯ļ Ϣ

14ʹFlush

û˷󣬷һҪ200-500msȥЩڴڼ䣬ûڵȴ״̬Ҫûȴʱ䣬ʵλʹflushѾ͵ûˣphpкʵ磺

15AjaxþGET

ʵʹXMLHttpRequestʱʹPOSTʵ֣ᷢ2HTTP󣬶ʹGETֻᷢ1HTTPGETHTTP50%

16ܼDCOMԪ

ܺ⣬Ǿܼҳи<>Ԫ

أȫȡ֮

17ʹöҳڵĶļͼƬ

ǵ˵IEҳУͬ1ʱ̣ͬ1мӵHTTP Ϊ2ҳҪصļ2(ͨԶԶ..)Ҫӿҳٶȣýļֲ19¥jsļö ˵ٶͼƬ20̨ϡ

18iframeʹãޱҪҪʹ

iframeͨڲͬݵļأͬʱҲiframeݼٶӰ쵽ҳٶȣܣҪصץȡֱǶ롣ʵҪiframeأú뷽ʽʵ֡

19ŻͼƬļ

ŻͼƬļСߴ磬رͼһҪߴͼȻãҪҳresizeʵ֣ȻͼƬЦˣصһҲû١ҳмصͼʵߴ10M֮ޡ

ͨͼiconҲҪѹ󣬿Բwebͼ񱣴桢ɫȵȷʵ֡

20ҳӴһ̶ȣԲ÷ҳķʽչ֣websjyַҳ뷽ʽ


аԴ

Ҫ ¼ ſػ鿴ûʺţע  

x
Դ΢http://weibo.com/techued Դ΢Źںţweb-tech
ʹõ ٱ ظ
kaorou37 2015-12-20 17:22:27
| ʾȫ¥
2F
Ҫ,¥ͷDz
Դ΢http://weibo.com/techued Դ΢Źںţweb-tech
ʹõ ٱ ظ ֧
kaorou37 2016-2-21 19:57:30
| ʾȫ¥
3F
Ҫ,¥ͷDz
Դ΢http://weibo.com/techued Դ΢Źںţweb-tech
ʹõ ٱ ظ ֧
fhuj3d96 2017-1-10 17:28:44
| ʾȫ¥
4F
ãֵϸ
Դ΢http://weibo.com/techued Դ΢Źںţweb-tech
ʹõ ٱ ظ ֧
zpmpb 2018-10-3 21:15:33
| ʾȫ¥
5F
o ~ӡϰQQ86450585ҩҡžӪ~ĺļֵ,ΪͻṩȫȶĵIJƷ
Դ΢http://weibo.com/techued Դ΢Źںţweb-tech
ʹõ ٱ ظ ֧
б

ֹ

̳¡ͼƬѷϴվԭתԻ,µİȨԭ
վַİȨ֪ͨǵĹԱ,Ա(Email:admin@websjy.com)ʱȡȨɾ
ܾκκʽڱ̳л񹲺͹ִ!

QQ| 42011102000510|Archiver|ֻ|Դ ( ICP14013341-1

GMT+8, 2018-10-21 16:52

Powered by Discuz! X3.2

ԴԴվ  ԴAPPӦ֮

ٻظ ض б