符合W3C Web標(biāo)準(zhǔn)的圖片連續(xù)無(wú)間隙水平滾動(dòng)

2019-11-21 01:42:24

字體：大中小

供稿：網(wǎng)友

這次又遇上一個(gè)這樣的問(wèn)題，找了老半天終于從網(wǎng)上找到一個(gè)不錯(cuò)的，看了下代碼，思路很簡(jiǎn)單，但代碼太多，通用性也不行，于是乎，自己又發(fā)明了兩個(gè)函數(shù)，用起來(lái)感覺(jué)還真不錯(cuò)，與大家共享：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>圖片連續(xù)無(wú)間隙向左滾動(dòng)，無(wú)間隙向右滾動(dòng)，符合W3C Web標(biāo)準(zhǔn)_</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> </head> <body> <div   class="iwvjtn8m0"   id="demo" style="overflow: hidden; width: 322px; height: 61px"> <table cellpadding="0" align="left" border="0" cellspace="0"> <tr> <td id="demo1" valign="top"><table cellspacing="0" cellpadding="0" width="322" bgcolor="#fffbf7" border="0"> <tr align="center"> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> </tr> </table></td> <td id="demo2" valign="top"></td> </tr> </table> </div> <div   class="iwvjtn8m0"   id="demo0" style="overflow: hidden; width: 322px; height: 61px"> <table cellpadding="0" align="left" border="0" cellspace="0"> <tr> <td id="demo11" valign="top"><table cellspacing="0" cellpadding="0" width="322" bgcolor="#fffbf7" border="0"> <tr align="center"> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.net/article/www.yonfa365.com.jpg" /> </td> </tr> </table></td> <td id="demo22" valign="top"></td> </tr> </table> </div> <script type="text/javascript" language="JavaScript"> //調(diào)用向左滾動(dòng) toleft("demo","demo1","demo2",30,"hehe123") //調(diào)用向右滾動(dòng) toright("demo0","demo11","demo22",20,"hehe1123") function $(id){return document.getElementById(id)} //向左滾動(dòng)函數(shù)，demo包含demo1與demo2,speed是滾動(dòng)速度，flag一個(gè)網(wǎng)頁(yè)內(nèi)有多個(gè)時(shí)設(shè)置為不同的任意字符。 //by 柳永法(yongfa365)'Blog　www.yongfa365.com function toleft(demo,demo1,demo2,speed,flag){ demo=$(demo);demo1=$(demo1);demo2=$(demo2) demo2.innerHTML=demo1.innerHTML function Marquee(){ if(demo2.offsetWidth-demo.scrollLeft<=0){ demo.scrollLeft-=demo1.offsetWidth } else{ demo.scrollLeft++ } } flag=setInterval(Marquee,speed) demo.onmouseover=function(){clearInterval(flag);} demo.onmouseout=function(){flag=setInterval(Marquee,speed);} } //向右滾動(dòng)函數(shù)，demo包含demo1與demo2,speed是滾動(dòng)速度，flag一個(gè)網(wǎng)頁(yè)內(nèi)有多個(gè)時(shí)設(shè)置為不同的任意字符。 //by 柳永法(yongfa365)'Blog　www.yongfa365.com function toright(demo,demo1,demo2,speed,flag){ demo=$(demo);demo1=$(demo1);demo2=$(demo2) demo2.innerHTML=demo1.innerHTML function Marquee(){ if(demo.scrollLeft<=0){ demo.scrollLeft=demo2.offsetWidth } else{ demo.scrollLeft-- } } flag=setInterval(Marquee,speed) demo.onmouseover=function(){clearInterval(flag);} demo.onmouseout=function(){flag=setInterval(Marquee,speed);} } </script> </body> </html>

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以下為網(wǎng)上提供的代碼

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Untitled Document</title> </head> <body> <img src="https://www.jb51.netimages/butt_arrowl.gif" style="cursor:pointer" onmouseover="clearright();toleft()"/> <img src="https://www.jb51.netimages/butt_arrowr.gif"style="cursor:pointer" onmouseover="clearleft();toright()"/> <div> <div   class="iwvjtn8m0"   id="demo" style="OVERFLOW: hidden; WIDTH: 322px; HEIGHT: 61px"> <table cellpadding="0" align="left" border="0" cellspace="0"> <tbody> <tr> <td id="demo1" valign="top"><table cellspacing="0" cellpadding="0" width="322" bgcolor="#fffbf7" border="0"> <tbody> <tr align="center"> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small01.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small02.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small03.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small06.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small05.jpg" /> </td> </tr> </tbody> </table></td> <td id="demo2" valign="top"></td> </tr> </tbody> </table> </div> </div> <div> <div   class="iwvjtn8m0"   id="demo_a" style="OVERFLOW: hidden; WIDTH: 322px; HEIGHT: 61px"> <table cellpadding="0" align="left" border="0" cellspace="0"> <tbody> <tr> <td id="demo_b" valign="top"><table cellspacing="0" cellpadding="0" width="322" bgcolor="#fffbf7" border="0"> <tbody> <tr align="center"> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small04.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small07.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small08.jpg" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small09.gif" /> </td> <td width="50" height="50"><img height="50" src="https://www.jb51.netimages/photo_small01.jpg" /> </td> </tr> </tbody> </table></td> <td id="demo_c" valign="top"></td> </tr> </tbody> </table> </div> </div> </body> </html> <script type="text/javascript"> /* **兼容IE,Firefox 遵循W3C標(biāo)準(zhǔn)寫法的圖片無(wú)縫滾動(dòng)代碼（支持左移/右移功能）(本示例為上下兩行圖片進(jìn)行雙行滾動(dòng)) ** **實(shí)現(xiàn)思路：一個(gè)設(shè)定寬度并且隱藏超出它寬度的內(nèi)容的容器demo，里面放demo1和demo2，demo1是滾動(dòng)內(nèi)容,demo2為demo1的直接克隆， **通過(guò)不斷改變demo1的scrollTop或者scrollLeft達(dá)到滾動(dòng)的目的，當(dāng)滾動(dòng)至demo1與demo2的交界處時(shí)直接跳回初始位置， **因?yàn)閐emo1與demo2一樣，所以分不出跳動(dòng)的瞬間，從而達(dá)到"無(wú)縫"滾動(dòng)的目的。 */ var speed1=0    //圖片左移的速度 var MyMar1    //setInterverval方法返回的間隔ID,些ID為全局的調(diào)用次數(shù)(用于第一行圖片) var MyMar2    //setInterverval方法返回的間隔ID,些ID為全局的調(diào)用次數(shù)(用于第二行圖片) var lefthit=0        //記錄左移按鈕點(diǎn)擊次數(shù) var righthit=0    ////記錄右移按鈕點(diǎn)擊次數(shù) //調(diào)用右移方法前,先讓左移停止（clearInterval清除setInterval對(duì)方法的調(diào)用） function clearleft(){ clearInterval(MyMar1) clearInterval(MyMar2) } //圖片左移的方法 function toleft(){ //判斷是否是第一次按下左移按鈕（圖片往左開始移動(dòng)的時(shí)候，不會(huì)在調(diào)用此方法。只有當(dāng)按了右移按鈕時(shí)，才會(huì)把lefthit重設(shè)為0） if(lefthit==0){ speed1=30;//圖片左移速度時(shí)間毫秒 //讓的內(nèi)容demo2與demo1內(nèi)容一樣 document.getElementById("demo2").innerHTML=document.getElementById("demo1").innerHTML //上行圖片移動(dòng)的方法 function Marquee1(){ //當(dāng)demo滾動(dòng)至demo2的交界處。與就是與demo2重合時(shí)。offsetWidth與scrollLeft剛好相等 if(document.getElementById("demo2").offsetWidth-document.getElementById("demo").scrollLeft<=0){ //demo跳回初始位置 document.getElementById("demo").scrollLeft-=document.getElementById("demo1").offsetWidth } else{ //demo開始重新移動(dòng) document.getElementById("demo").scrollLeft++ } } //setInterval讓Marquee1方法每隔多少秒執(zhí)行一次，并把返回的調(diào)用次數(shù)ID MyMar1=setInterval(Marquee1,speed1) //當(dāng)鼠標(biāo)移動(dòng)demo上面時(shí)。調(diào)用clearInterval清除MyMar1.這樣圖片便不會(huì)在移動(dòng)了。移到圖片時(shí)，第一行和第二行的圖片都會(huì)停止 document.getElementById("demo").onmouseover=function() {clearInterval(MyMar1);clearInterval(MyMar2)} //當(dāng)鼠標(biāo)移除demo時(shí),重新setInterval讓方法執(zhí)行，這樣圖片會(huì)繼續(xù)移動(dòng) document.getElementById("demo").onmouseout=function() {MyMar1=setInterval(Marquee1,speed1);clearInterval(MyMar2);MyMar2=setInterval(Marquee2,speed1)} //下面的方法與上面的方法一樣，用于第二行的圖片向左移動(dòng) document.getElementById("demo_c").innerHTML=document.getElementById("demo_b").innerHTML function Marquee2(){ if(document.getElementById("demo_c").offsetWidth-document.getElementById("demo_a").scrollLeft<=0){ document.getElementById("demo_a").scrollLeft-=document.getElementById("demo_b").offsetWidth} else{ document.getElementById("demo_a").scrollLeft++ } } MyMar2=setInterval(Marquee2,speed1) document.getElementById("demo_a").onmouseover=function() {clearInterval(MyMar2);clearInterval(MyMar1)} document.getElementById("demo_a").onmouseout=function() {MyMar2=setInterval(Marquee2,speed1); document.getElementById("demo").onmouseout()} lefthit=1        //設(shè)置左移按鈕，當(dāng)按了一次左移后(不管按多少次)，在沒(méi)按右移按鈕之前，toleft方法里的的代碼不會(huì)再被執(zhí)行 righthit=0    //把右移按鈕設(shè)為0,這樣當(dāng)下次點(diǎn)了右移按鈕的時(shí)候，以便toright方法被調(diào)用 } } var MyMar3    //setInterverval方法返回的間隔ID,些ID為全局的調(diào)用次數(shù)(用于第一行圖片) var MyMar4    //setInterverval方法返回的間隔ID,些ID為全局的調(diào)用次數(shù)(用于第二行圖片) var speed2=0    //圖片右移的速度 //調(diào)用移左方法前,先讓右移停止（clearInterval清除setInterval對(duì)方法的調(diào)用） function clearright(){ clearInterval(MyMar3) clearInterval(MyMar4) } //圖片右移方法(與圖片左移方法思路一樣) function toright(){ //判斷是否是第一次按下右移按鈕（圖片往右開始移動(dòng)的時(shí)候，不會(huì)在調(diào)用此方法。只有當(dāng)按了左移按鈕時(shí)，才會(huì)把righthit重設(shè)為0） if(righthit==0){ speed2=30; document.getElementById("demo2").innerHTML=document.getElementById("demo1").innerHTML function Marquee_a(){ if(document.getElementById("demo").scrollLeft<=0){ document.getElementById("demo").scrollLeft=document.getElementById("demo2").offsetWidth } else{ document.getElementById("demo").scrollLeft-- } } MyMar3=setInterval(Marquee_a,speed2) document.getElementById("demo").onmouseover=function() {clearInterval(MyMar3);document.getElementById("demo_a").onmouseover()} document.getElementById("demo").onmouseout=function() {MyMar3=setInterval(Marquee_a,speed2);clearInterval(MyMar4);MyMar4=setInterval(Marquee_b,speed2)} document.getElementById("demo_c").innerHTML=document.getElementById("demo_b").innerHTML function Marquee_b(){ if(document.getElementById("demo_a").scrollLeft<=0){ document.getElementById("demo_a").scrollLeft=document.getElementById("demo_c").offsetWidth } else{ document.getElementById("demo_a").scrollLeft-- } } MyMar4=setInterval(Marquee_b,speed2) document.getElementById("demo_a").onmouseover=function() {clearInterval(MyMar4);clearInterval(MyMar3)} document.getElementById("demo_a").onmouseout=function() {MyMar4=setInterval(Marquee_b,speed2);document.getElementById("demo").onmouseout()} righthit=1    //設(shè)置右移按鈕，當(dāng)按了一次右移按鈕后(不管按多少次)，在沒(méi)按左移按鈕之前，toright方法里的的代碼不會(huì)再被執(zhí)行 lefthit=0    //把左移按鈕設(shè)為0,這樣當(dāng)下次點(diǎn)了左移按鈕的時(shí)候，以便toleft方法被調(diào)用 } } </script>

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