# Web

# flag

# 框架

# 面包屑导航

面包屑导航(BreadcrumbNavigation),这个概念名词来自一段童话故事“汉塞尔和格莱特”他们在森林里玩耍迷了路, 于是用一路撒面包屑的方式找到了出去的路。所以面包屑导航的作用是告诉访问者他们目前所在网站的位置以及如何返回上一级页面

面包屑导航(BreadcrumbNavigation)的作用及影响,让用户了解目前所在的位置,以及当前页面在整个网站中所在的位置; 体现了网站的架构层级;提高了用户体验;减少返回到上一级页面的操作;不用常常占用屏幕空间;降低跳出率; 有利于蜘蛛对网站的抓取;提供返回各个曾记得快速入口;有利于网站内链的建设。

注意:不管事次导航还是面包屑导航我们都要记住一点,不要堆砌关键词来放在导航栏上面。 关键词一定要自然分布,结合面包屑的导航让用户体验更好,页面更友好与搜索引擎也更友好。

# MimeType

文件扩展名 Content-Type(Mime-Type)
. application/x-
.*( 二进制流,不知道下载文件类型) application/octet-stream
.001 application/x-001
.301 application/x-301
.323 text/h323
.906 application/x-906
.907 drawing/907
.a11 application/x-a11
.acp audio/x-mei-aac
.ai application/postscript
.aif audio/aiff
.aifc audio/aiff
.aiff audio/aiff
.anv application/x-anv
.apk application/vnd.android.package-archive
.asa text/asa
.asf video/x-ms-asf
.asp text/asp
.asx video/x-ms-asf
.au audio/basic
.avi video/avi
.avi/ .mpg/ .mpeg/ .mp4 video/*
.awf application/vnd.adobe.workflow
.biz text/xml
.bmp application/x-bmp
.bot application/x-bot
.c4t application/x-c4t
.c90 application/x-c90
.cal application/x-cals
.cat application/vnd.ms-pki.seccat
.cdf application/x-netcdf
.cdr application/x-cdr
.cel application/x-cel
.cer application/x-x509-ca-cert
.cg4 application/x-g4
.cgm application/x-cgm
.cit application/x-cit
.class java/*
.cml text/xml
.cmp application/x-cmp
.cmx application/x-cmx
.cot application/x-cot
.crl application/pkix-crl
.crt application/x-x509-ca-cert
.csi application/x-csi
.css text/css
.cut application/x-cut
.dbf application/x-dbf
.dbm application/x-dbm
.dbx application/x-dbx
.dcd text/xml
.dcx application/x-dcx
.der application/x-x509-ca-cert
.dgn application/x-dgn
.dib application/x-dib
.dll application/x-msdownload
.doc application/msword
.docm application/vnd.ms-word.document.macroEnabled.12
.docx application/vnd.openxmlformats-officedocument.wordprocessingml.document
.dot application/msword
.dotm application/vnd.ms-word.template.macroEnabled.12
.dotx application/vnd.openxmlformats-officedocument.wordprocessingml.template
.drw application/x-drw
.dtd text/xml
.dwf Model/vnd.dwf
.dwf application/x-dwf
.dwg application/x-dwg
.dxb application/x-dxb
.dxf application/x-dxf
.edn application/vnd.adobe.edn
.emf application/x-emf
.eml message/rfc822
.ent text/xml
.epi application/x-epi
.eps application/x-ps
.eps application/postscript
.etd application/x-ebx
.exe application/x-msdownload
.fax image/fax
.fdf application/vnd.fdf
.fif application/fractals
.fo text/xml
.frm application/x-frm
.g4 application/x-g4
.gbr application/x-gbr
.gif image/gif
.gl2 application/x-gl2
.gp4 application/x-gp4
.hgl application/x-hgl
.hmr application/x-hmr
.hpg application/x-hpgl
.hpl application/x-hpl
.hqx application/mac-binhex40
.hrf application/x-hrf
.hta application/hta
.htc text/x-component
.htm text/html
.htm/.html text/html
.html text/html
.htt text/webviewhtml
.htx text/html
.icb application/x-icb
.ico image/x-icon
.ico application/x-ico
.iff application/x-iff
.ig4 application/x-g4
.igs application/x-igs
.iii application/x-iphone
.img application/x-img
.ins application/x-internet-signup
.ipa application/vnd.iphone
.isp application/x-internet-signup
.IVF video/x-ivf
.java java/*
.jfif image/jpeg
.jpe image/jpeg
.jpe application/x-jpe
.jpeg image/jpeg
.jpg image/jpeg
.jpg application/x-jpg
.js application/x-javascript
.jsp text/html
.la1 audio/x-liquid-file
.lar application/x-laplayer-reg
.latex application/x-latex
.lavs audio/x-liquid-secure
.lbm application/x-lbm
.lmsff audio/x-la-lms
.ls application/x-javascript
.ltr application/x-ltr
.m1v video/x-mpeg
.m2v video/x-mpeg
.m3u audio/mpegurl
.m4e video/mpeg4
.mac application/x-mac
.man application/x-troff-man
.math text/xml
.mdb application/msaccess
.mdb application/x-mdb
.mfp application/x-shockwave-flash
.mht message/rfc822
.mhtml message/rfc822
.mi application/x-mi
.mid audio/mid
.midi audio/mid
.mil application/x-mil
.mml text/xml
.mnd audio/x-musicnet-download
.mns audio/x-musicnet-stream
.mocha application/x-javascript
.movie video/x-sgi-movie
.mp1 audio/mp1
.mp2 audio/mp2
.mp2v video/mpeg
.mp3 audio/mp3
.mp3/ .wav/ audio/*
.mp4 video/mpeg4
.mpa video/x-mpg
.mpd application/vnd.ms-project
.mpe video/x-mpeg
.mpeg video/mpg
.mpg video/mpg
.mpga audio/rn-mpeg
.mpp application/vnd.ms-project
.mps video/x-mpeg
.mpt application/vnd.ms-project
.mpv video/mpg
.mpv2 video/mpeg
.mpw application/vnd.ms-project
.mpx application/vnd.ms-project
.mtx text/xml
.mxp application/x-mmxp
.net image/pnetvue
.nrf application/x-nrf
.nws message/rfc822
.odc text/x-ms-odc
.out application/x-out
.p10 application/pkcs10
.p12 application/x-pkcs12
.p7b application/x-pkcs7-certificates
.p7c application/pkcs7-mime
.p7m application/pkcs7-mime
.p7r application/x-pkcs7-certreqresp
.p7s application/pkcs7-signature
.pc5 application/x-pc5
.pci application/x-pci
.pcl application/x-pcl
.pcx application/x-pcx
.pdf application/pdf
.pdx application/vnd.adobe.pdx
.pfx application/x-pkcs12
.pgl application/x-pgl
.pic application/x-pic
.pko application/vnd.ms-pki.pko
.pl application/x-perl
.plg text/html
.pls audio/scpls
.plt application/x-plt
.png image/png
.png application/x-png
.png/.jpg/.gif image/*
.pot application/vnd.ms-powerpoint
.potm application/vnd.ms-powerpoint.presentation.macroEnabled.12
.potx application/vnd.openxmlformats-officedocument.presentationml.template
.ppa application/vnd.ms-powerpoint
.ppam application/vnd.ms-powerpoint.addin.macroEnabled.12
.ppm application/x-ppm
.pps application/vnd.ms-powerpoint
.ppsm application/vnd.ms-powerpoint.slideshow.macroEnabled.12
.ppsx application/vnd.openxmlformats-officedocument.presentationml.slideshow
.ppt application/vnd.ms-powerpoint
.ppt application/x-ppt
.pptm application/vnd.ms-powerpoint.presentation.macroEnabled.12
.pptx application/vnd.openxmlformats-officedocument.presentationml.presentation
.pr application/x-pr
.prf application/pics-rules
.prn application/x-prn
.prt application/x-prt
.ps application/x-ps
.ps application/postscript
.ptn application/x-ptn
.pwz application/vnd.ms-powerpoint
.r3t text/vnd.rn-realtext3d
.ra audio/vnd.rn-realaudio
.ram audio/x-pn-realaudio
.ras application/x-ras
.rat application/rat-file
.rdf text/xml
.rec application/vnd.rn-recording
.red application/x-red
.rgb application/x-rgb
.rjs application/vnd.rn-realsystem-rjs
.rjt application/vnd.rn-realsystem-rjt
.rlc application/x-rlc
.rle application/x-rle
.rm application/vnd.rn-realmedia
.rmf application/vnd.adobe.rmf
.rmi audio/mid
.rmj application/vnd.rn-realsystem-rmj
.rmm audio/x-pn-realaudio
.rmp application/vnd.rn-rn_music_package
.rms application/vnd.rn-realmedia-secure
.rmvb application/vnd.rn-realmedia-vbr
.rmx application/vnd.rn-realsystem-rmx
.rnx application/vnd.rn-realplayer
.rp image/vnd.rn-realpix
.rpm audio/x-pn-realaudio-plugin
.rsml application/vnd.rn-rsml
.rt text/vnd.rn-realtext
.rtf application/msword
.rtf application/x-rtf
.rv video/vnd.rn-realvideo
.sam application/x-sam
.sat application/x-sat
.sdp application/sdp
.sdw application/x-sdw
.sis application/vnd.symbian.install
.sisx application/vnd.symbian.install
.sit application/x-stuffit
.slb application/x-slb
.sld application/x-sld
.slk drawing/x-slk
.smi application/smil
.smil application/smil
.smk application/x-smk
.snd audio/basic
.sol text/plain
.sor text/plain
.spc application/x-pkcs7-certificates
.spl application/futuresplash
.spp text/xml
.ssm application/streamingmedia
.sst application/vnd.ms-pki.certstore
.stl application/vnd.ms-pki.stl
.stm text/html
.sty application/x-sty
.svg text/xml
.swf application/x-shockwave-flash
.tdf application/x-tdf
.tg4 application/x-tg4
.tga application/x-tga
.tif image/tiff
.tif application/x-tif
.tiff image/tiff
.tld text/xml
.top drawing/x-top
.torrent application/x-bittorrent
.tsd text/xml
.txt text/plain
.uin application/x-icq
.uls text/iuls
.vcf text/x-vcard
.vda application/x-vda
.vdx application/vnd.visio
.vml text/xml
.vpg application/x-vpeg005
.vsd application/vnd.visio
.vsd application/x-vsd
.vss application/vnd.visio
.vst application/vnd.visio
.vst application/x-vst
.vsw application/vnd.visio
.vsx application/vnd.visio
.vtx application/vnd.visio
.vxml text/xml
.wav audio/wav
.wax audio/x-ms-wax
.wb1 application/x-wb1
.wb2 application/x-wb2
.wb3 application/x-wb3
.wbmp image/vnd.wap.wbmp
.wiz application/msword
.wk3 application/x-wk3
.wk4 application/x-wk4
.wkq application/x-wkq
.wks application/x-wks
.wm video/x-ms-wm
.wma audio/x-ms-wma
.wmd application/x-ms-wmd
.wmf application/x-wmf
.wml text/vnd.wap.wml
.wmv video/x-ms-wmv
.wmx video/x-ms-wmx
.wmz application/x-ms-wmz
.wp6 application/x-wp6
.wpd application/x-wpd
.wpg application/x-wpg
.wpl application/vnd.ms-wpl
.wq1 application/x-wq1
.wr1 application/x-wr1
.wri application/x-wri
.wrk application/x-wrk
.ws application/x-ws
.ws2 application/x-ws
.wsc text/scriptlet
.wsdl text/xml
.wvx video/x-ms-wvx
.x_b application/x-x_b
.x_t application/x-x_t
.xap application/x-silverlight-app
.xdp application/vnd.adobe.xdp
.xdr text/xml
.xfd application/vnd.adobe.xfd
.xfdf application/vnd.adobe.xfdf
.xhtml text/html
.xla application/vnd.ms-excel
.xlam application/vnd.ms-excel.addin.macroEnabled.12
.xls application/vnd.ms-excel
.xls application/x-xls
.xlsb application/vnd.ms-excel.sheet.binary.macroEnabled.12
.xlsm application/vnd.ms-excel.sheet.macroEnabled.12
.xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
.xlt application/vnd.ms-excel
.xltm application/vnd.ms-excel.template.macroEnabled.12
.xltx application/vnd.openxmlformats-officedocument.spreadsheetml.template
.xlw application/x-xlw
.xml text/xml
.xpl audio/scpls
.xq text/xml
.xql text/xml
.xquery text/xml
.xsd text/xml
.xsl text/xml
.xslt text/xml
.xwd application/x-xwd