Ukusebenzisa iimpawu CSS "bonisa: none"

Uhlobo lwamakhasi ayingxangxasi (CSS) kukuvumela ukuba balungelelanise imbonakalo noyilo iphepha web. Enye mihlaba ezininzi eziqhele ukusetyenziswa kunye nemilinganiselo yayo ngu "bonisa: none".

Ukumiselwa izakhiwo

Lo mhlaba ngokwayo multi-injongo kwaye imisela uhlobo uboniso element kuxwebhu. Kuxhomekeka amaxabiso ethile iphepha ekhethiweyo ingabonakaliswa isahlulo block, linearly, njengoko uluhlu lwezinto njengenxalenye itafile, njalo njalo. D. Ngenxa yoko, ngenxa iyimpahla "ukubonisa", bangatshintsha uhlobo block kuxwebhu.

Njengoko kuba inyanda "ixabiso lwepropati isiboniso: none", oko ikuvumela ukuba ukucima into okanye ibhloko uxwebhu. Kwindawo enye phantsi iqhekeza Eliphepha Akundibekelanga, nto leyo ithetha ukuba liphuma lomlambo. Zonke izinto ezingaphaya "emgama", nje akazange abone kwaye ngoyaba ubungakanani kunye nendawo le yunithi. Ukubuyela into efihlakeleyo, kufuneka ubhekisela uxwebhu nge imibhalo ukutshintsha nje ixabiso lepropati kwifomathi oyifunayo. Xa oku kusenzeka ukufomata ngokuzenzekelayo le page kunye into entsha kuyo.

Umahluko phakathi iipropati "display" yaye "ukubonakala"

Nangona isibakala sokuba ngenxa zombini iipropati ukufihla izinto bayafihlwa kumsebenzisi, umgaqo abasebenza eyahlukileyo kakhulu. Njengoko sele kukhankanyiwe ngentla, i parameter "bonisa: none" lisusa element ukusuka kuxwebhu. Le block iwela ngaphandle le page, kanjalo zisenzeka kuyo. Kulo mzekelo, le nto nangoku uhlala kwi HTML-khowudi.

Ngenxa yoko, lo propati "ukubonakala: efihliweyo" Uyayifihla element bayafihlwa kumsebenzisi, kodwa akuwususi ukusuka uxwebhu. Ngoko ke, eli phepha ligcinwe indawo kule block. Oko kukuthi, ukuhamba xwebhu iya kwamkeleka kwaye ingqalelo indawo nobungakanani element ne propati "ukubonakala: efihliweyo" kanye ngendlela enye ngaphandle kwayo.

Le umahluko isakhiwo nokucwangciswa xwebhu kwezi Propati ezimbini kwenza kube lula ukufezekisa iziphumo ezinqwenelekayo ukubonisa iphepha elichanekileyo.

Ukusebenzisa CSS - bonisa: akukho

uxwebhu Internet kukho iindlela ezininzi ukujonga iimpawu element. Lokuqala ukubonisa: Akukho bani libekwe kwifayile eyahlukileyo Uhlobo lwamakhasi ayingxangxasi. Le ndlela yeyona eliphezulu kakhulu kwaye ilungileyo, njengoko likuvumela ukuba wenze zonke selectors, iiklasi kunye neempawu zazo kuxwebhu eyahlukileyo. Loo modeli ikuvumela ukuba ufumane ngokukhawuleza uze ulungise useto page.

Uxwebhu header

Lwalo yesibini kukuchaza izimbo phakathi isihloko tags uxwebhu isimbo. Ukusebenza yale ndlela lingaphantsi kakhulu. Kuyanconywa ukuba isicelo kuphela kwiimeko ezigabadeleyo, njengoko ekho kukho inani elikhulu entlobo sofundo lamaphepha web yokuluka kuguga kakhulu. Kwaye oku kukhokelela iimpazamo wehlise inkqubo yokuphuhlisa uxwebhu web. Le ndlela kucetyiswa kuphela kwimeko ngokongeza i tag ukuba inani elincinane ngezimbo okanye isixhobo USB.

Khumbula ukuba ukuba eli indlela yokucwangcisa nezimbo kuxwebhu lingaphantsi kwe eyahlukileyo ishithi lesimbo yokungenisa, iimpawu sifana luzakubalwa ngaphezulu ngabo ukuba nisemzimbeni yoxwebhu html.

Block div. Bonisa: akukho

Enye indlela ukongeza ngqo ithegi "Indlela = bonisa: namnye;" ikhowudi element. Le ndlela idla ngokusetyenziswa xa usebenza sikhokhelo ezahlukeneyo, injongo - ukunciphisa inani iimpawu ngqo lohlobo kwaye ubabonise kuxwebhu web. Ukongeza, irekhodi enjalo rhoqo xa ebukele "ikhowudi ngabahloli" page. Kubalulekile ukuba ukhumbule ukuba ukusebenzisa le ndlela, uyakwazi ukutshintsha impahla kunye nexabiso kumiselwe lohlobo. Ngoko ke kufuneka silumke, ngenxa yoko, uyakwazi ukwenza iingxaki ezongezelelweyo baze bachithe ixesha elithile ngokufumana nokulungisa iimpazamo kwi khowudi page.

JavaScript

Kubalulekile kwakhona ukuba sikhankanye amathuba utshintsho vetshe ngokuphathelele kulo propati. Libhekisela ayisekho ukuya lohlobo kunye HTML-ikhowudi kunye ulwimi. Ngoko ke, ukuba isicelo kufuneka ukuba ubuncinane ulwazi oluthile kule ndawo. Ukuze ususe i element ukusuka flow kuxwebhu, ungasebenzisa i ipropati JavaScript "display = none". It likuvumela ukuba utshintshe isakhiwo uxwebhu xa isiganeko esithile. Kwakhona, ngokusetyenziswa kweencwadi zeempendulo ukuba dynamically ( "kubhabho") ukutshintsha iipropati parameter ngokwenjenjalo uvuselela imboniselo wephepha ngaphandle kokuba ukulayisha. Le ndlela luncedo xa uququzelela drop-down menu, iifestile zizilabalabi kunye neefom.

SEO

Entsimini enyusa isiqulatho web ngenxa iinjini zokuphendla, kukho iinkolelo ezininzi kunye nokungaqiniseki. Ngoko ke, SEOs ezininzi abo basandula kuqalisa cinga ukusetyenziswa iipropati "display" ukuziphatha okubi. Bacacisa oku kukuba iinjini zokuphendla ndibona umxholo efihlakeleyo, baqale ingqalelo kwiphepha spam. Xa amazwi abo, kukho abathile logic, kodwa hayi kakhulu enye. Ngelo thuba ke impahla bezinto efihliweyo zisetyenziswa ngokwaneleyo ukufomata-drop-down menu kwaye fihla amaqela oxwebhu, nto leyo ngoku umdla umsebenzisi (umzekelo, xa ukhetha udidi olunye ulwazi icinyiwe). Le ndlela isebenzisa Intanethi enamandla ngokwaneleyo (omnye wabo - i "Amazon"). Ngenxa yoko, izigcawu enjini yokukhangela akakwazi siqwalasele ukusetyenziswa kwepropati "bonisa: none" spam.

Enye into, xa le ndlela isetyenziswa ukufihla amagama athile kunye nabalinganiswa. Nangona yokuba ngoku izigcawu enjini yokukhangela Asikabi nazo ingqalelo nokugqibelela ezinjalo "umyalezo ozingenelayo ongamkelekanga" algorithms kumaxwebhu, ukuba nokwenzeka ukuba iphepha abanjiswe oku, kakhulu phezulu. Ngako oko ke kucetyiswa ukuba usebenzise propati "ukubonisa" esokuba lwaso injongo - ukutshintsha uhlobo ibloko okanye okwethutyana ukuzifihla emehlweni umsebenzisi.