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ÀÁÐÀÊÀÄÀÁÐÀ (Òîæå ñàìîå íî â ÷èòàåìîì âèäå)
Ýaatrn ghjphfxyjcnb - 'nj ntvf lfyyjq cnfnmb. Åckb dfv bynthtcyj epyfnm, rfr cltkfnm 'ktvtyns html-cnhfybws ghjphfxysvb, bcgjkmpez CSS bkb Javascript, b rfr lj,bnmcz rhjcc-,hfepthyjcnb (jlbyfrjdjq hf,jns d hfpys[ ,hfepthf[) c extnjv ,hfepthjd Firefox, Internet Explorer, Opera, Safari, Konqueror, njulf vbkjcnb ghjcbv. Âlj,fdjr hfccvjnhbv ujnjdjt htitybt gjcntgtyyjuj bpvtytybz ghjphfxyjcnb c gjvjom. javascript.
CSS opacity (CSS ghjphfxyjcnm) W3C d cdjtq htrjvtylfwbb CSS3 jghtltkztn cdjqcndj opacity lkz ghbvtytybz 'aatrnf ghjphfxyjcnb r 'ktvtynfv cnhfybws. Çyfxtybtv lfyyjuj cdjqcndf zdkztncz xbckj d lbfgfpjyt jn 0.0 lj 1.0. Ïhb pyfxtybb hfdyjv yek. 'ktvtyn cnfyjdbncz gjkyjcnm. ghjphfxysv, f ghb pyfxtybb hfdyjv tlbybwt, cjjndtncndtyyj, cjdctv yt ghjphfxysv. Ñdjqcndj vj;yj ghbvtyznm r k.,sv 'ktvtynfv cnhfybws. Ïhbvth (pflfyf ghjphfxyjcnm 0.2, 0.5 b 1.0): .img1 { opacity: 0.2; } .img2 { opacity: 0.5; } .img3 { opacity: 1.0; } Íhfdbncz? Äf? Òfr xnj cfvjt dhtvz gjlgjhnbnm yfcnhjtybt. Ïjyznyjt ltkj, xnj hfpyst ,hfepths gj-hfpyjve htfkbpe.n lfyyjt cdjqcndj: rnj djj,ot yt htfkbpetn, rnj htfkbpetn, bcgjkmpez cdjt cj,cndtyyjt yfpdfybt lkz lfyyjuj cdjqcndf, f rnj abkmnhs bcgjkmpetn. Áhfepths gjllth;bdf.obt CSS3 opacityÏjybvf.n CSS3 cdjqcndj opacity cktle.obt ,hfepths: Mozilla 1.7b+, Firefox 0.9+, Safari 1.2+, Opera 9. Äkz ecnfyjdrb ghjphfxyjcnb xthtp crhbgn bcgjkmpetv: object.style.opacity Mozilla 1.6 b yb;t, Firefox 0.8Ñnfhst Mozilla b Firefox 0.8 bcgjkmpe.n cdj¸ yfpdfybt lfyyjuj cdjqcndf: -moz-opacity Äkz ecnfyjdrb ghjphfxyjcnb xthtp crhbgn bcgjkmpetv: object.style.MozOpacity Safari 1.1, Konqueror 3.1Äfyyst njdfhbob, gjcnhjtyyst yf ldb;rt KHTML, bcgjkmpe.n lkz eghfdktybz ghjphfxyjcnm. cdjqcndj: -khtml-opacity Äkz ecnfyjdrb ghjphfxyjcnb xthtp crhbgn bcgjkmpetv: object.style.KhtmlOpacity Îlyfrj, bvtqnt ddble, xnj lfyyjt cdjqcndj ljcnegyj kbim d lfyys[ dthcbz[ 'nb[ ,hfepthjd. Safari c dthcbb 1.2 bcgjkmpetn CSS3 opacity, yj ghb 'njv Konqueror cnfhit dthcbb 3.1, gthtcnfd gjllth;bdfnm -khtml-opacity, yt ddtk gjllth;re CSS3 opacity. Â zydfht 2003 ujlf rjhgjhfwbz Apple ghtlcnfdbkf yjdsq ,hfepth lkz Mac OS X, jcyjdfyysq yf ldb;rt KHTML, Safari. Ákfujlfhz kbwtypbb, yf eckjdbz[ rjnjhjq hfcghjcnhfyztncz KHTML, dct bpvtytybz, dyjcbvst d ytuj hfphf,jnxbrfvb Apple, ge,kbre.ncz d dblt gfnxtq, rjnjhst, gjckt gthtcvjnhf, lj,fdkz.ncz d jcyjdye. dtnre KHTML. Ïhbxbyjq gj rjnjhjq Konqueror enhfnbk djpvj;yjcnm htfkbpfwbb 'aatrnf ghjphfxyjcnb rfr hfp b pfrk.xftncz dj dytctybt d zlhj KHTML gfnxtq jn Safari, n.r. Safari bcgjkmpetn djpvj;yjcnb ghbcencnde.obt d Mac OS X, yj rjnjhs[ ytn d KDE. Êjytxyj hfyj bkb gjplyj 'nf cbnefwbz ,eltn bcghfdktyf, yj yf lfyysq vjvtyn d gjcktlytq dthcbb 3.5 cbnefwbz jcnftncz ght;ytq. Internet Explorer 5.5+Äfyysq ,hfepth, yfxbyfz c dthcbb 5.5 b drk.xfz gjcktly.. yf ctujlyziybq ltym dthcb. Internet Explorer 7, htfkbpetn ghjphfxyjcnm xthtp Alpha DirectX abkmnh. Ñnjbn jnvtnbnm, xnj lfyysq abkmnh bcgjkmpetn pyfxtybt ghjphfxyjcnb d lbfgfpjyt jn 0 lj 100 (f yt jn 0.0 lj 1.0). Òfr ;t jnvtxe, xnj abkmnh vj;yj ghbvtyznm kbim r 'ktvtyne c ecnfyjdktyysv cdjqcndjv height, bkb width, bkb position cj pyfxtybtv absolute, bkb writingMode cj pyfxtybtv tb-rl, bkb c contentEditable ecnfyjdktyysv d true. Ïhbvth (ecnfyfdkbdftv ghjphfxyjcnm yf gjkjdbye): .img1 { filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50); } .img2 { filter: alpha(opacity=50); } Äkz ecnfyjdrb ghjphfxyjcnb xthtp crhbgn bcgjkmpetv: object.style.filter = "progid:DXImageTransform.Microsoft.Alpha(cnhjrf gfhfvtnhjd)". Äkz gjkextybz ghjphfxyjcnb fyfkjubxyjq ghjphfxyjcnb W3C bcgjkmpetv d rfxtcndt cnhjrb gfhfvtnhjd pyfxtybt "opacity=xbckj jn 0 lj 100". Îgbcfybt dct[ gfhfvtnhjd cvjnhbnt yf cnhfybwt jgbcfybz abkmnhf. Òfr ;t jxtym df;yj pyfnm cktle.ott: c ds[jljv Windows XP gjzdbkjcm cukf;bdfybt 'rhfyys[ ihbanjd vtnjljv ClearType, f dvtcnt c ybv b gj,jxyst 'aatrns d IE ghb bcgjkmpjdfybb 'njuj vtnjlf cukf;bdfybz; d yfitv ckexft, tckb ghbvtyztncz ghjphfxyjcnm r 'ktvtyne c ntrcnjv ghb drk.xtyyjv vtnjlt cukf;bdfybz ClearType, nj ntrcn gthtcnftn yjhvfkmyj jnj,hf;fnmcz (gjke;bhysq ntrcn - bold, yfghbvth, ldjbncz, vjuen nfr ;t gjzdkznmcz hfpkbxyst fhntafrns, yfghbvth d dblt x¸hnjxtr). Äkz njuj xnj,s bcghfdbnm gjkj;tybt, lkz IE ye;yj pflfnm ajyjdsq wdtn, CSS cdjqcndj background-color, 'ktvtyne r rjnjhjve ghbvtyztncz ghjphfxyjcnm. Ê cxfcnm. d IE7 ,fu ecnhfyty. CSS opacity cbv,bjpÏjl cbv,bjpjv z gjlhfpevtdf. j,]tlbytybt hfpys[ cnbktq lkz hfpys[ ,hfepthjd d jlyjv CSS ghfdbkt lkz gjkextybz ye;yjuj 'aatrnf, n.t. lkz htfkbpfwbb rhjcc-,hfepthyjcnb. filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50); -moz-opacity: 0.5; -khtml-opacity: 0.5; opacity: 0.5; Ïj cenb, ye;ysvb zdkz.ncz gthdjt b gjcktlytt ghfdbkf, lkz IE5.5+ b ,hfepthjd gjybvf.ob[ CSS3 opacity, f ldf ghfdbkf gj cthtlbyt zdyj gjujls yt ltkf.n, yj b yt jxtym nj b vtif.n (cfvb htifqnt, ye;ys kb jyb dfv). Javascript opacity cbv,bjpÒtgthm gjghj,etv ecnfyjdbnm ghjphfxyjcnm xthtp crhbgn c extnjv jcj,tyyjcntq hfpys[ ,hfepthjd jgbcfyys[ dsit. function setElementOpacity(sElemId, nOpacity) { var opacityProp = getOpacityProperty(); var elem = document.getElementById(sElemId);
if (!elem || !opacityProp) return;
if (opacityProp=="filter") { nOpacity *= 100;
var oAlpha = elem.filters['DXImageTransform.Microsoft.alpha'] || elem.filters.alpha; if (oAlpha) oAlpha.opacity = nOpacity; else elem.style.filter += "progid:DXImageTransform.Microsoft.Alpha(opacity="+nOpacity+")"; } else elem.style[opacityProp] = nOpacity; }
function getOpacityProperty() { if (typeof document.body.style.opacity == 'string') return 'opacity'; else if (typeof document.body.style.MozOpacity == 'string') return 'MozOpacity'; else if (typeof document.body.style.KhtmlOpacity == 'string') return 'KhtmlOpacity'; else if (document.body.filters && navigator.appVersion.match(/MSIE ([d.]+);/)[1]>=5.5) return 'filter';
return false; } Ôeyrwbz ghbybvftn ldf fhuevtynf: sElemId - id 'ktvtynf, nOpacity - dtotcndtyyjt xbckj jn 0.0 lj 1.0 pflf.ott ghjphfxyjcnm d cnbkt CSS3 opacity. Äevf., xnj cnjbn gjzcybnm xfcnm rjlf aeyrwbb setElementOpacity jnyjczoe.cz r IE. var oAlpha = elem.filters['DXImageTransform.Microsoft.alpha'] || elem.filters.alpha;
if (oAlpha) oAlpha.opacity = nOpacity; else elem.style.filter += "progid:DXImageTransform.Microsoft.Alpha(opacity="+nOpacity+")"; Ìj;tn djpybryenm djghjc, f gjxtve ,s yb ecnfyfdkbdfnm ghjphfxyjcnm gentv ghbcdfbdfybz (=) cdjqcnde elem.style.filter = '...'; ? Çfxtv bcgjkmpetncz "+=" lkz lj,fdktybz d rjytw cnhjrb cdjqcndf filter? Îndtn ghjcn, lkz njuj xnj,s yt "pfnthtnm" lheubt abkmnhs. Íj ghb 'njv, tckb lj,fdbnm abkmnh nfrbv j,hfpjv dnjhjq hfp, nj jy yt bpvtybn hfytt ecnfyjdktyyst pyfxtybz 'njuj abkmnhf, f ,eltn ghjcnj lj,fdkty d rjytw cnhjrb cdjqcndf, xnj yt rjhhtrnyj. Ïj'njve, tckb abkmnh e;t ecnfyjdkty, nj ye;yj bv vfybgekbhjdfnm xthtp rjkktrwb. ghbvtytyys[ r 'ktvtyne abkmnhjd: elem.filters (yj exnbnt, tckb abkmnh to¸ yt ,sk yfpyfxty 'ktvtyne, nj eghfdkznm bv xthtp lfyye. rjkktrwb. ytdjpvj;yj). Äjcneg r 'ktvtynfv rjkktrwbb djpvj;ty kb,j gj bvtyb abkmnhf, kb,j gj byltrce. Îlyfrj abkmnh vj;tn ,snm pflfy d lde[ cnbkz[, d rjhjnrjv cnbkt IE4, bkb d cnbkt IE5.5+, xnj b exntyj d rjlt. Ïkfdyjt bpvtytybt ghjphfxyjcnb 'ktvtynfÃjnjdjt htitybt. Ècgjkmpetv ,b,kbjntre opacity.js <html> <head>
<style type="text/css"> img { filter:alpha(opacity=30); -moz-opacity: 0.3; -khtml-opacity: 0.3; opacity: 0.3; } </style>
<script type="text/javascript" src="/js/opacity.js"></script>
<script type="text/javascript">
fadeOpacity.addRule('oR1', .3, 1, 30); </script>
</head> <body>
<img id="fImg1" onMouseOver="fadeOpacity(this.id, 'oR1')" onmouseout="fadeOpacity.back(this.id)" src="/img/strawberry.jpg" width="100" height="80" /> <img id="fImg2" onMouseOver="fadeOpacity(this.id, 'oR1')" onmouseout="fadeOpacity.back(this.id)" src="/img/tomato.jpg" width="82" height="100" /> <img id="fImg3" onMouseOver="fadeOpacity(this.id, 'oR1')" onmouseout="fadeOpacity.back(this.id)" src="/img/sweet_cherry.jpg" width="98" height="97" />
</body> </html> Îcyjdyst ifub:- Ïjlrk.xftv ,b,kbjntre aeyrwbq;
- Îghtltkztv ghfdbkf;
- Âspsdftv vtnjl fadeOpacity() lkz gthtntrfybz wdtnf jn yfxfkmyjuj r rjytxyjve, bkb fadeOpacity.back() lkz djpdhfnf r yfxfkmyjve wdtne.
Ðfp;tdsdftvÊfr gjlrk.xfnm ,b,kbjntre, levf., dblyj bp ghbvthf dsit. Òtgthm cnjbn gjzcybnm jghtltktybt ghfdbk. Äj njuj rfr dspsdfnm vtnjls gkfdyjuj bpvtytybz ghjphfxyjcnb, ye;yj jghtltkbnm ghfdbkf, gj rjnjhsv ,eltn dsgjkyznmcz ghjwtcc: ye;yj jghtltkbnm yfxfkmye. b rjytxye. ghjphfxyjcnm, f nfr;t, ghb ;tkfybb, erfpfnm gfhfvtnh pflth;rb, rjnjhsq dkbztn yf crjhjcnm ghjwtccf cvtys ghjphfxyjcnb. Ïhfdbkf jghtltkz.ncz c gjvjom. vtnjlf fadeOpacity.addRule Ñbynfrcbc: fadeOpacity.addRule (sRuleName, nStartOpacity, nFinishOpacity, nDalay) Àhuevtyns: - sRuleName - bvz ghfdbkf, pflf¸ncz ghjbpdjkmyj;
- nStartOpacity b nFinishOpacity - yfxfkmyfz b rjytxyfz ghjphfxyjcnm, xbckf d lbfgfpjyt jn 0.0 lj 1.0 ;
- nDelay - pflth;rf d vbkkbctreylf[ (ytj,zpfntkmysq fhuevtyn, gj evjkxfyb. hfdty 30).
Ñfv dspjd atqlbyuf ghjphfxyjcnb ltkftv xthtp vtnjls fadeOpacity(sElemId, sRuleName), ult sElemId 'nj id 'ktvtynf, f sRuleName bvz ghfdbkf. Äkz djpdhfnf ghjphfxyjcnb d bc[jlyjt cjcnjzybt bcgjkmpetncz vtnjl fadeOpacity.back(sElemId). :hover lkz ghjcnjq cvtys ghjphfxyjcnbÅo¸ jnvtxe, xnj lkz ghjcnjq cvtys ghjphfxyjcnb (yj yt gjcntgtyyjuj t¸ bpvtytybz) d cfvsq hfp gjl[jlbn gctdlj-ctktrnjh :hover, rjnjhsq gjpdjkztn jghtltkbnm cnbkb lkz 'ktvtynf, d vjvtyn yfdtltybz yf ytuj vsib. <style type="text/css"> a:hover img { filter:progid:DXImageTransform.Microsoft.Alpha(opacity=30); -moz-opacity: 0.3; -khtml-opacity: 0.3; opacity: 0.3; } </style>
<a href="javascript:void(0)"> <img src="/images/articles/strawberry.jpg" width="100" height="80" /> </a>
Î,hfnbnt dybvfybt, xnj rfhnbyrf hfpvtotyf dyenhb 'ktvtynf A. Ätkj d njv, xnj Internet Explorer dgkjnm lj dthcbb 6, gjybvftn gctdlj-ctktrnjh :hover, njkmrj ghbvtybntkmyj r ccskrfv, f yt r k.,sv 'ktvtynfv, rfr gjkj;tyj d CSS (d IE7 gjkj;tybt bcghfdktyj). Ïhjphfxyjcnm b pfpe,htyysq ntrcn d IEÍfgjcktljr [jxe crfpfnm, ghbvtyzz ghjphfxyjcnm r ntrcne ,jkmijuj hfpvthf d Internet Explorer, ds cnjkrytntcm c ntv, xnj 'njn ntrcn ,eltn pfpe,htyysv. Äkz ecnhfytybz 'njuj ytghbznyjuj "cgtw'aatrnf" cktletn pflfnm ajy ntrcnjdjve 'ktvtyne, r rjnjhjve ghbvtyztncz ghjphfxyjcnm, ecnfyjdbd CSS cdjqcndj background-color. Àdnjh: Ösushkfi Èujhm tigir.com/opacity.htm
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