Lub Caij Nyoog no Muaj Cov Kev Pab Tau Zoo Tshaj Lwm Cov Khoom Siv
HTML5 muaj xws li lub caij sib tw hu ua CANVAS. Nws muaj ntau siv, tab sis yuav kom siv nws koj yuav tsum kawm tau ib co JavaScript, HTML, thiab qee zaum CSS.
Qhov no ua rau CANVAS keeb me ntsis daunting rau ntau designers, thiab qhov tseeb, feem ntau yuav zaum las mees kom txog thaum nws muaj cuab yeej txhim khu kev tsim los tsim cov CANVAS animations thiab kev ua si tsis paub txog JavaScript.
Yam HTML5 Canvas Siv Los Rau
Lub HTML5 CANVAS caij yuav siv tau ntau ntau yam uas yav tas los, koj yuav tsum tau siv daim ntawv thov embedded zoo li Flash los ua kom muaj:
- dynamic graphics
- online thiab offline ua si
- animations
- sib tham sib yees duab thiab suab
Nyob rau hauv qhov tseeb, lub ntsiab yog vim li cas tib neeg siv lub CANVAS keeb yog vim li cas yooj yim nws yog tig lub web page dawb rau hauv ib lub web daim ntawv thov dynamic thiab ces hloov daim ntawv thov mus rau hauv ib lub xov tooj mobile rau siv hauv smartphones thiab ntsiav tshuaj.
Yog Peb Muaj Flash, Vim Li Cas Peb Yuav Tsum Tau Tiv Thaiv Cov Ntaub Ntawv?
Raws li cov lus qhia HTML5, lub NTSAWJ CANVAS yog:
"... ib qhov kev txiav txim siab uas yog siv cov bitmap canvas, uas yog siv rau kev ua duab, cov kev ua si graphics, kos duab, lossis lwm yam duab pom ntawm cov yoov."Lub caij CANVAS cia koj kos duab, kos duab, ua si, kos duab, thiab lwm yam kev pom zoo rau ntawm nplooj ntawv web page.
Koj yuav tsum xav tias peb tau ua li ntawd nrog Flash, tiam sis nws muaj ob qho kev sib txawv ntawm CANVAS thiab Flash:
- Lub caij CANVAS yog nyob ruaj hauv cov HTML. Cov scripts uas kos rau nws yog hauv HTML los yog nyob rau hauv ib qho chaw txuas sab nraud. Qhov no txhais tau tias CANVAS keeb yog ib feem ntawm daim qauv khoom kwv, lossis DOM.
- Eeb yog ib qho ntaub ntawv tso tawm sab nraud. Nws siv lub EMBED los yog lub ntsiab ntawm OBJECT los tso saib, thiab tsis tuaj yeem mus koom nrog lwm cov ntsiab HTML. Vim tias lub peevxwm CANVAS yog ib feem ntawm DOM, nws tuaj yeem cuam tshuam nrog DOM ntau txoj kev.
- Piv txwv, tej zaum koj yuav tsim ib qho animation uas hloov thaum qee qhov ntawm nplooj ntawv yog interacted nrog - xws li ib daim ntawv caij uas tau ntim hauv. Los ntawm Flash, feem ntau koj yuav ua li cas yuav tsum pib lub yeeb yam Flash lossis animation, tab sis nrog CANVAS koj yuav tsim ntau yam teebmeem, txawm tias ntxiv cov ntawv nyeem los ntawm daim teb daim ntawv rau hauv cov animation.
- Lub caij CANVAS yog natively kev txhawb los ntawm cov web browsers. Hauv kev txiav txim rau cov neeg siv yuav tau siv Flash, lawv tus browser yuav tsum muaj lub plugin ntsia. Qhov no feem ntau yog ib qho hassle rau cov neeg feem ntau vim cov kev pabcuam hluavtaws tshaj tawm lossis qhov tseeb tias lawv qhov kev ua haujlwm tsuas yog tsis txhawb nws.
- Nws siv los ua kom txhua qhov browser muaj lub plugin ntsia, tab sis qhov no tsis yog qhov teeb meem, thiab ntau yog txawm tias tshem lub plugin vim muaj teeb meem. Ntxiv, nws tsis txawm muaj nyob rau ntawm qhov nrov iOS platform.
Canvas Yog Qhov Tseem Ceeb Yog Koj Tsis Tau Npaj Rau Kev Siv Flash
Ib lub ntsiab lus tseem ceeb yog vim li cas lub peev xwm ntawm CANVAS thiaj li tsis totaub yog tias ntau lub tshuab tsim tau los siv lub vas sab hauv txhua lub sijhawm. Dluab tej zaum yuav animated, tab sis uas ua nrog GIF, thiab tiv thaiv koj tau embed video rau hauv cov nplooj ntawv, tiam sis dua, nws yog ib tug yees duab zoo li qub uas tsuas tso rau ntawm nplooj ntawv thiab tej zaum pib los yog nres vim sis, tab sis txhua yam.
Lub caij CANVAS tso cai rau koj mus ntxiv cov ntaub ntawv ntau ntxiv rau koj cov nplooj ntawv web site vim tias tam sim no koj tuaj yeem tswj tau cov duab, cov duab, thiab cov ntawv nyeem nrog cov lus scripting. Lub caij CANVAS yuav pab koj tig cov duab, duab, kab kos, thiab cov duab ua cov ntsiab lus ntawm cov yeeb yaj kiab.
Thaum Yuav Xav Txog Siv Cov Cai hauv Canvas
Koj cov neeg tuaj saib yuav tsum yog thawj qhov kev txiav txim siab thaum txiav txim seb puas yuav siv lub CANVAS keeb.
Yog hais tias koj cov neeg tuaj saib neeg siv feem ntau siv Windows XP thiab IE 6, 7, los yog 8, ces tsim ib qho dynamic canvas feature yuav mus pointless vim cov browsers tsis txhawb nws.
Yog tias koj tab tom tsim ib daim ntawv thov uas yuav siv tau rau ntawm cov cav tov xwb, ces Flash tej zaum koj qhov thawj koom ruam zoo tshaj plaws. Ib daim ntawv thov yuav tsum tau siv rau lub tshuab Windows thiab Mac computers yuav tau txais txiaj ntsig los ntawm Silverlight application.
Txawm li cas los xij, yog tias koj daim ntawv thov yuav tsum tau saib ntawm mobile pab kiag li lawm (ob qho tib si hauv thiab iOS no) thiab cov qauv siv computer tshiab (hloov mus rau qhov browser versions tshiab), ces siv lub CANVAS keeb yog kev xaiv zoo.
Nco ntsoov tias siv cov npe no tso cai rau koj muaj cov kev xaiv rov qab xws li cov duab qub rau cov laus dua uas tsis txhawb nws.
Txawm li cas los, nws tsis pom zoo siv HTML5 canvas rau txhua yam. Koj yuav tsum tsis txhob siv nws rau tej yam xws li koj lub logo, kab lus, los sis navigation (txawm tias siv nws los ua kom muaj ib feem ntawm cov no yuav zoo).
Raws li qhov kev qhia tshwj xeeb, koj yuav tsum siv cov ntsiab lus uas zoo tshaj plaws rau koj tab tom sim ua. Yog li siv lub TAUB lub npe nrog rau cov duab thiab cov ntawv nyeem zoo dua rau lub caij CANVAS rau koj lub taub hau thiab lub logo.
Tsis tas li ntawd, yog tias koj tab tom tsim ib qhov web page lossis daim ntawv thov uas yog siv los siv nruab nrab ntawm kev sib tham tsis zoo li luam ntawv, koj yuav tsum paub hais tias CANVAS lub npe uas tau muab kho tshiab tsis tau luam tawm thaum koj xav tau. Koj tuaj yeem tau txais cov ntawv luam tawm cov ntsiab lus tam sim no lossis cov ntsiab lus rov qab.