Ib qho ntawm cov cim npe uas koj yuav kawm tau thaum ntxov hauv koj qhov kev tsim qauv web tsim yog ob peb lub cim npe hu ua "cov cim npe tseem ceeb." Cia wb mus saib seb cov cim npe yog li cas thiab seb lawv siv nyob rau hauv lub web tsim hnub no.
Rov qab mus rau XHTML
Yog hais tias koj kawm HTML xyoo dhau los, zoo ua ntej qhov nce ntawm HTML5, koj zaum siv ob qho tag nrho cov cim npe thiab cov ntawv cim npe. Raws li koj xav tau, cov cim npe no ua rau cov ntawv nyeem tuab lossis nws cov ntawv nyeem zoo dua. Qhov teeb meem nrog cov cim npe, thiab vim li cas lawv raug thawb rau hauv cov ntsiab lus tshiab (uas peb yuav saib sai), yog tias lawv tsis yog cov ntsiab lus tseem ceeb. Qhov no yog vim lawv txhais tias cov ntawv nyeem yuav tsum tsis txhob saib cov ncauj lus ntawm cov ntawv nyeem. Nco ntsoov, HTML (uas yog qhov chaw cim npe no yuav tsum sau) yog txhua yam hais txog tus qauv, tsis pom kev zoo nkauj! Visuals raug daws los ntawm CSS thiab kev tsim web tsim tau ntev ntev uas koj yuav tsum muaj kev sib cais ntawm cov qauv thiab cov qauv hauv koj cov nplooj ntawv web. Qhov no txhais hais tias tsis siv cov ntsiab lus uas tsis yog semantic thiab qhov nthuav dav saib zoo dua li cov qauv. Qhov no yog vim li cas cov ntawv cim npe thiab ntawv nyeem ntau tau muab hloov los ntawm qhov muaj zog (rau siab) thiab qhov tseem ceeb (rau cov ntawv nyeem).
& lt; muaj zog & gt; thiab & lt; em & gt;
Cov lus muaj zog thiab tseem ceeb qhia ntxiv rau koj cov lus, qhia txog cov ntsiab lus uas yuav tsum tau kho thiab txawv dua thaum cov ntsiab lus tau hais. Koj siv cov ntsiab lus zoo nkauj li qub tib yam koj yuav tau siv bold thiab italics yav dhau los. Tsuas nrawm koj cov ntawv nyeem nrog cov lus qhib thiab kaw ( thiab rau qhov tseem ceeb thiab thiab kom muaj kev xyuam xim) thiab cov ntawv nyeem nrog rau.
Koj tuaj yeem zes cov cim npe thiab nws tsis txawv ntawm sab nraud lossis. Nov yog qee cov qauv.
No cov ntawv nyeem thiab feem ntau cov browsers yuav tso nws li italics. Cov ntawv nyeem no yog qhov tseem ceeb heev thiab cov browsers feem ntau yuav pom nws ua hom tuab.Hauv ob qho ntawm cov qauv no, peb tsis dictating visual pom nrog cov HTML. Muaj, qhov pom ntawm qhov lossis yuav tsum yog italics thiab cov yuav bold, tab sis cov neeg zoo li yuav hloov tau yooj yim hauv CSS. Qhov no yog qhov zoo tshaj ntawm ob lub ntiaj teb. Koj tuaj yeem leverage lub vas sab browser yeej tau nws cov ntawv nyeem lossis italicized hauv koj daim ntawv tsis tau hla kab thiab nws cov qauv thiab cov qauv. Hais tias koj xav tau cov ntawv nyeem tsis yog tsuas yog bold, tab sis kuj tseem yog xim liab, koj tuaj yeem ntxiv qhov no rau CSS
muaj zog {
xim: liab;
}
Hauv qhov ua piv txwv no, koj tsis tas yuav ntxiv ib qho khoom rau lub vaj huam sib luag bold uas yog lub neej ntawd. Yog tias koj tsis xav tawm qhov ntawd mus rau lub sijhawm, txawm li cas los, koj yeej ib txwm ntxiv rau hauv:
muaj zog {
font-weight: bold;
xim: liab;
}
Tam sim no koj yuav tau tag nrho, tab sis guaranteed muaj ib nplooj ntawv nrog bold (thiab liab) ntawv txhua qhov twg
Ua ob txog qhov tseem ceeb
Ib yam uas kuv tau pom dua hauv lub xyoo yog dab tsi tshwm sim yog tias koj sim ua ob lo lus. Piv txwv li:
Cov ntawv no yuav tsum muaj bolded thiab italicized ntawv hauv nws.Koj yuav xav tias qhov kab no yuav tsim ib cheeb tsam uas muaj cov ntawv nyeem uas yog bold thiab cov ntawv nyeem. Qee lub sij hawm qhov no tshwm sim tiag tiag, tab sis kuv tau pom qee cov browsers tsuas yog qhov thib ob ntawm ob qhov yeeb yam tseem ceeb, qhov ze tshaj rau cov ntawv nyeem cov lus nug, thiab tsuas pom qhov no ua cov ntawv nyeem. Qhov no yog ib qho ntawm cov txheej xwm vim li cas kuv tsis ua ob zaug rau cov cim tseem ceeb.
Lwm qhov laj thawj yuav tsum tsis txhob muaj qhov "doubling" yog rau cov hom phiaj xav tau. Ib hom kev qhia tshwj xeeb yog tias feem ntau txaus los qhia cov suab lus uas koj xav teem. Koj tsis tas yuav ua siab tawv, zoo nkauj, xim, loj dua, thiab kos kab hauv qab kom nws sawv ntsug. Nqe lus no, yuav tag nrho cov hom kev qhia ntau yam, yuav yog qhov zoo. Yog li yuav tsum ceev faj thaum siv cov ntawv cim tseem ceeb lossis CSS hom kev qhia kom paub meej thiab txhob ua tsis dhau.
Ib Lus Cog Tseg rau Cuav thiab Italics
Ib qho kawg xav - thaum siv daim ntawv cim npe (bold) thiab italics () no tsis pub kom siv raws li cov ntsiab lus tseem ceeb, muaj qee qhov web designers uas siv cov cim npe rau cov tswv yim ntawm cov ntawv sau. Yeej, lawv siv nws zoo li lub element. Qhov no zoo vim tias cov cim npe yog luv luv, tab sis siv cov ntsiab lus hauv no yog tsis pom zoo. Kuv hais rau hauv thaum koj pom nws muaj nyob rau qee qhov chaw uas tsis yog siv los tsim cov ntawv nyeem los yog nws cov ntawv nyeem, tab sis los tsim cov CSS nuv rau lwm hom kev pom duab.
Thawj tsab xov xwm los ntawm Jennifer Krynin. Edited by Jeremy Girard rau 12/2/16.