Indlela yokwenza isizinda ku-HTML. imiyalelo iDemo

Lesi sihloko kuzokuvumela ukubhekana lo mbuzo: "Indlela yokwenza isizinda ku-HTML» kuzoxoxwa izindlela ezivame kakhulu futhi elula ezisetshenziswa Abaklami yesimanje.

Ukuze uqonde ukuthi ukwenza ngemuva HTML, udinga kuphela uhlole esinye ngemfanelo elula. Okungukuthi bgcolor, okuyinto ungakwazi babela amagugu ngesimo amagama umbala noma ikhodi yabo ngabanye. Ungasebenzisa ngemfanelo kunoma ithegi noma isici, isib, ngoba izigaba ngazinye, kumafomu, amatafula, njll Ukuze ushintshe umbala yonke idokhumenti, faka ngemfanelo bgcolor ithegi umzimba. Kodwa kukhona omunye bathi: bgcolor bekulokhu kubhekwa njengento engeyinhle futhi kwenza ikhodi yakho ngokuzenzakalelayo ayivumelekile. World Wide Web Consortium ikhuthaza bonke onjiniyela ukusebenzisa CSS okulingana. Cascading ulimi kukuvumela esikhundleni izimfanelo engadingeki futhi ungaze ungeze izici ezintsha. Kuyinto nge CSS ongayifinyelela imiphumela kufana kakhulu nalokho yayihloselwe.

analogs izimfanelo

Ukudala isizinda isayithi, kungcono ukusebenzisa ulimi Cascading Style Sheets. Umbala ongemuva impahla izoshintsha umbala yimuphi isici. Uma lo myalo akuyona ekhethekile izinjongo ithegi othize, ngemuva kuzoshintsha idokhumenti. Ngokwesibonelo, ukuqopha umbala ongemuva: obomvu, wenze ngemuva indawo ezibomvu. Futhi uma kunomuntu ongaphezu incazelo enemininingwane, isibonelo p {umbala ongemuva: oluhlaza} ke p iphethini zencazelo isigaba ngasinye kuyoba luhlaza. Imininingwane bededela, imithetho abe kuqala ephakeme. Ungasebenzisa iDemo notation ngemuva. Njengasendabeni yabase nge ngemfanelo bgcolor, ukubaluleka impahla ukuba umbala ongemuva kungase kubonise zonke izindlela eyaziwa ukuchaza imibala.

1. Ngegama. Sekukonke kukhona izihloko ezinkulu 17 (obomvu, oluhlaza, blue, njll).
2. Ngu hexadecimal lapho yakhiwa amadijithi kusuka 0 kuya ku-9 izinhlamvu A kuya F (# c0c0c0).
3. Ukusebenzisa izifinyezo RGB, RGBA, HSL, HSLA. Ukuqopha ngale ndlela has ifomu RBG elandelayo (122, 142, 92) noma HSL (13, 21%, 75%).

isithombe

Esinye sezici eziphawuleka kakhulu CSS - kungenzeka ukusebenzisa izithombe ezingemuva isayithi. Kulokhu, isithombe pre-ezikhethiwe izosetshenziswa esikhundleni ngemuva evamile. Ingemuva-image impahla ingasetshenziswa ezinye noma zonke ikhasi, njengembumba umbala ongemuva. Ngenxa ukubaluleka saziso izenzo-url ukurekhoda. Lokhu kuhlola kulandelwa ikheli, okumele ubheke isithombe. Ngokwesibonelo, ukuqopha ngemuva-image:-url (isithombe / 2.gif), khetha ifayela kusuka lwemibhalo 2.gif isithombe bese wenze kube isithombe sangemuva. Ikheli kumele kube ngempela kubakaki. Lo mthetho ungaba irekhodi isizinda iDemo Used, lapho ungafaka ipahla ngemuva. imiphumela ezithakazelisayo ingatholakala nge imiyalo eyengeziwe. Ngokwesibonelo, ingemuva-okunamathiselwe utshela isiphequluli kanjani kufanele ngokwabo faka isithombe uma ebonakalayo iwindi umsebenzisi. Isizinda isithombe kungenzeka njalo endaweni efanayo noma ukuhambisa kanye konke okuqukethwe into ethile.

isiphetho

Sithemba ozifundile lesi sihloko sendlela ukwenza ngemuva HTML. Kulokhu, ukukhetha kunikezwa izindlela ezimbalwa ezahlukene. Uma kubalulekile ukuthi ikhodi yakho isebenza, awukwazi ukusebenzisa HMTL bgcolor ngemfanelo. Kanti-ke futhi bayakhohlwa lo myalo futhi usebenzise imithetho CSS kuphela. Ngemva Cascading Style Sheets abangu elakhelwe ukuze ukwazi kalula ukubhekana ikhasi design. Yingakho enjalo bgcolor izimfanelo basonta esidlule futhi kubhekwe engathandeki ukudala-HTML Amakhasi. Ngemva lamagama angabhekwa umbuzo "indlela yokwenza ingemuva HTML» ivaliwe.