js如何点击左右按钮切换图片

JavaScript018

js如何点击左右按钮切换图片,第1张

这样:

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title>动态切换图片</title>

</head>

<style>

ul{

padding:0margin:0

}

li{

list-style: none

}

#pic{

position: relative

width: 400px

height: 400px

background-color:red

margin:100px auto

background:url('image/1.jpg') no-repeat center

}

#pic img{

width: 400px

height: 400px

}

#pic ul{

width: 50px

position: absolute

top: 0

right: -70px

}

li{

width: 40px

height: 40px

margin-bottom:10px

background-color: pink

float: left

}

#pic span{

position: absolute

bottom: 10px

left: 0

}

#pic p,#pic span{

width: 400px

height: 20px

}

#pic p{

position: absolute

top: 10px

left: 0

}

.active{

background-color: red

}

</style>

<body>

<div id="pic">

<img src="" alt="">

<p>qwrwe</p>

<span>werwer</span>

<ul>

</ul>

</div>

<script>

window.onload=function(){

//存放旧li

var oldLi=null

var num=0

var oPic = document.getElementById('pic')

var oImg = oPic.getElementsByTagName('img')[0]

var oUL =  oPic.getElementsByTagName('ul')[0]

var oSpan= oPic.getElementsByTagName('span')[0]

var oP = oPic.getElementsByTagName('p')[0]

var oLi= oUL.getElementsByTagName('li')

var arr=['image/1.jpg','image/2.jpg','image/3.jpg','image/4.jpg']

var aText = ['图片1','图片2','图片3','图片4']

for(var i=0i<arr.lengthi++){

//动态添加元素

oUL.innerHTML+='<li></li>'

}

// 旧li就等于当前的

oldLi=oLi[num]

// 初始化

oImg.src=arr[num]

oP.innerHTML=num+1+'/'+arr.length

oSpan.innerHTML=aText[num]

oLi[num].className='active'

for(var i=0i<arr.lengthi++){

// 给元素自定义属性

//

oLi[i].index=i

oLi[i].onclick=function(){

// 当元素被点击时图片文字信息都一起变化

oImg.src=arr[this.index]

oP.innerHTML=1+this.index+'/'+arr.length

oSpan.innerHTML=aText[this.index]

// 清空上一个 当前添加

oldLi.className=''

//将上一个给当前

oldLi=this

this.className='active'

}

}

}

</script>

</body>

</html>

扩展资料:

注意事项

1、可以通过JS删除和添加hidden属性,改用style.display="none"和style.display="inline"来实现隐藏和显示。

2、button属性,主要的问题时button样式的问题,如何才能做一个好看的button,通过查找找到了设置button相关的值。

border:none设置按钮无边框

outline:none消除按钮点击后出现的表示被点击的边框

background:url(...)按钮背景图片

text-shadow: 0 1px 1px rgba(0,0,0,.3)文字阴影

box-shadow: 0 5px 7px rgba(0,0,0,.2)按钮阴影

border-radius:15px按钮边框圆角

1、首先准备一个HTML文档,文档中准备好两个图片,接下来会对这两个图片进行旋转。

2、然后对HTML中的内容定义一些样式,如下图所示,主要是标题以及ul的样式。

3、接下来就给图片所在的li定义宽高,如下图所示。

4、然后给图片设置过渡效果,过渡使用transition属性,如下图所示。

5、当鼠标悬停在图片上时,通过rotate给其设置变形,如下图所示,正数代表的是顺时针,负数代表的是逆时针。

6、最后运行程序,会看到如下图所示的效果,鼠标放在图片上会顺时针或者逆时针旋转。

这段代码可以: <!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><meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" /><title>图片</title><script language="javascript"><!-- //图片滚动列表 mengjia 070927 var Speed_1 = 10//速度(毫秒) var Space_1 = 20//每次移动(px) var PageWidth_1 = 116 * 3//翻页宽度 var interval_1 = 7000//翻页间隔 var fill_1 = 0//整体移位 var MoveLock_1 = falsevar MoveTimeObj_1var MoveWay_1="right"var Comp_1 = 0var AutoPlayObj_1=nullfunction GetObj(objName){if(document.getElementById){return eval('document.getElementById("'+objName+'")')}else{return eval('document.all.'+objName)}} function AutoPlay_1(){clearInterval(AutoPlayObj_1)AutoPlayObj_1=setInterval('ISL_GoDown_1()ISL_StopDown_1()',interval_1)} function ISL_GoUp_1(){if(MoveLock_1)returnclearInterval(AutoPlayObj_1)MoveLock_1=trueMoveWay_1="left"MoveTimeObj_1=setInterval('ISL_ScrUp_1()',Speed_1)} function ISL_StopUp_1(){if(MoveWay_1 == "right"){return}clearInterval(MoveTimeObj_1)if((GetObj('ISL_Cont_1').scrollLeft-fill_1)%PageWidth_1!=0){Comp_1=fill_1-(GetObj('ISL_Cont_1').scrollLeft%PageWidth_1)CompScr_1()}else{MoveLock_1=false} AutoPlay_1()} function ISL_ScrUp_1(){if(GetObj('ISL_Cont_1').scrollLeft<=0){GetObj('ISL_Cont_1').scrollLeft=GetObj('ISL_Cont_1').scrollLeft+GetObj('List1_1').offsetWidth} GetObj('ISL_Cont_1').scrollLeft-=Space_1} function ISL_GoDown_1(){clearInterval(MoveTimeObj_1)if(MoveLock_1)returnclearInterval(AutoPlayObj_1)MoveLock_1=trueMoveWay_1="right"ISL_ScrDown_1()MoveTimeObj_1=setInterval('ISL_ScrDown_1()',Speed_1)} function ISL_StopDown_1(){if(MoveWay_1 == "left"){return}clearInterval(MoveTimeObj_1)if(GetObj('ISL_Cont_1').scrollLeft%PageWidth_1-(fill_1>=0?fill_1:fill_1+1)!=0){Comp_1=PageWidth_1-GetObj('ISL_Cont_1').scrollLeft%PageWidth_1+fill_1CompScr_1()}else{MoveLock_1=false} AutoPlay_1()} function ISL_ScrDown_1(){if(GetObj('ISL_Cont_1').scrollLeft>=GetObj('List1_1').scrollWidth){GetObj('ISL_Cont_1').scrollLeft=GetObj('ISL_Cont_1').scrollLeft-GetObj('List1_1').scrollWidth} GetObj('ISL_Cont_1').scrollLeft+=Space_1} function CompScr_1(){if(Comp_1==0){MoveLock_1=falsereturn} var num,TempSpeed=Speed_1,TempSpace=Space_1if(Math.abs(Comp_1)<PageWidth_1/2){TempSpace=Math.round(Math.abs(Comp_1/Space_1))if(TempSpace<1){TempSpace=1}} if(Comp_1<0){if(Comp_1<-TempSpace){Comp_1+=TempSpacenum=TempSpace}else{num=-Comp_1Comp_1=0} GetObj('ISL_Cont_1').scrollLeft-=numsetTimeout('CompScr_1()',TempSpeed)}else{if(Comp_1>TempSpace){Comp_1-=TempSpacenum=TempSpace}else{num=Comp_1Comp_1=0} GetObj('ISL_Cont_1').scrollLeft+=numsetTimeout('CompScr_1()',TempSpeed)}} function picrun_ini(){ GetObj("List2_1").innerHTML=GetObj("List1_1").innerHTMLGetObj('ISL_Cont_1').scrollLeft=fill_1>=0?fill_1:GetObj('List1_1').scrollWidth-Math.abs(fill_1)GetObj("ISL_Cont_1").onmouseover=function(){clearInterval(AutoPlayObj_1)} GetObj("ISL_Cont_1").onmouseout=function(){AutoPlay_1()} AutoPlay_1()} //产品展示滚动图片结束 //--></script><style type="text/css"><!-- BODY { BORDER-TOP-WIDTH: 0pxBORDER-LEFT-WIDTH: 0pxFONT-SIZE: 12pxBORDER-BOTTOM-WIDTH: 0pxMARGIN: 0pxFONT-FAMILY: 宋体BACKGROUND-COLOR: #fffBORDER-RIGHT-WIDTH: 0px } .blk_18 { BORDER-RIGHT: #e3e3e3 1px solidBORDER-TOP: #e3e3e3 1px solidMARGIN-TOP: 8pxFONT-SIZE: 12pxBACKGROUND: #f3f3f3OVERFLOW: hiddenBORDER-LEFT: #e3e3e3 1px solidWIDTH: 390pxBORDER-BOTTOM: #e3e3e3 1px solidZOOM: 1 } .blk_18 .pcont { FLOAT: leftOVERFLOW: hiddenWIDTH: 350px } .blk_18 .ScrCont { WIDTH: 32766pxZOOM: 1 } .blk_18 #List1_1 { FLOAT: left } .blk_18 #List2_1 { FLOAT: left } .blk_18 .LeftBotton { BACKGROUND: url( http://img.china.alibaba.com/images/unsort/module/picr_1.gif ) no-repeatFLOAT: leftMARGIN: 10px 1pxWIDTH: 15pxHEIGHT: 72px } .blk_18 .RightBotton { BACKGROUND: url( http://img.china.alibaba.com/images/unsort/module/picr_1.gif ) no-repeatFLOAT: leftMARGIN: 10px 1pxWIDTH: 15pxHEIGHT: 72px } .blk_18 .LeftBotton { BACKGROUND-POSITION: 0px 0pxMARGIN-LEFT: 5px } .blk_18 .RightBotton { BACKGROUND-POSITION: 0px -100pxMARGIN-LEFT: -1px } .blk_18 .LeftBotton:hover { BACKGROUND-POSITION: -20px 0px } .blk_18 .RightBotton:hover { BACKGROUND-POSITION: -20px -100px } .blk_18 .pl IMG { DISPLAY: blockMARGIN: 6px auto 1pxCURSOR: pointerBORDER-TOP-STYLE: noneBORDER-RIGHT-STYLE: noneBORDER-LEFT-STYLE: noneBORDER-BOTTOM-STYLE: none } .blk_18 .pl { BORDER-RIGHT: #f3f3f3 1px solidBORDER-TOP: #f3f3f3 1px solidFLOAT: leftBORDER-LEFT: #f3f3f3 1px solidWIDTH: 114pxLINE-HEIGHT: 24pxBORDER-BOTTOM: #f3f3f3 1px solidTEXT-ALIGN: centerTEXT-DECORATION: underline } .blk_18 A.pl:hover { BORDER-RIGHT: #ff9900 1px solidBORDER-TOP: #ff9900 1px solidBACKGROUND: #fffBORDER-LEFT: #ff9900 1px solidCOLOR: #ff9900BORDER-BOTTOM: #ff9900 1px solid } .commu_cont3 { MARGIN: 9px 7px 7pxLINE-HEIGHT: 150% } .commu_cont3 UL { WIDTH: 188px } --></style></head><body><!-- picrotate_left start --><DIV class=blk_18><A 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width=96>要显瘦就这么穿!</A><!-- piclist end --></DIV><DIV id=List2_1></DIV></DIV></DIV><A onmouseup=ISL_StopDown_1() class=RightBotton onmousedown=ISL_GoDown_1() onmouseout=ISL_StopDown_1() href="javascript:void(0)" target=_self></A></DIV><SCRIPT type=text/javascript><!-- picrun_ini() //--></SCRIPT><!-- picrotate_left end --></body></html>