用js 实现走马灯效果,横向的怎么实现?纵向的又是怎么实现的?

JavaScript08

用js 实现走马灯效果,横向的怎么实现?纵向的又是怎么实现的?,第1张

<!--

/*MSClass (Class Of Marquee Scroll通用不间断滚动JS封装类) Ver 1.65*\

copyright qqlxinye

应用说明:页面包含<script type="text/javascript" src="MSClass.js"></script>

创建实例:

//参数直接赋值法

new Marquee("marquee")

new Marquee("marquee","top")

......

new Marquee("marquee",0,1,760,52)

new Marquee("marquee","top",1,760,52,50,5000)

......

new Marquee("marquee",0,1,760,104,50,5000,3000,52)

new Marquee("marquee",null,null,760,104,null,5000,null,-1)

//参数动态赋值法

var marquee1 = new Marquee("marquee") *此参数必选

marquee1.Direction = "top"或者 marquee1.Direction = 0

marquee1.Step = 1

marquee1.Width = 760

marquee1.Height = 52

marquee1.Timer = 50

marquee1.DelayTime = 5000

marquee1.WaitTime = 3000

marquee1.ScrollStep = 52

marquee1.Start()

参数说明:

ID "marquee" 容器ID (必选)

Direction (0) 滚动方向 (可选,默认为0向上滚动) 可设置的值包括:0,1,2,3,"top","bottom","left","right" (0向上 1向下 2向左 3向右)

Step (1) 滚动的步长 (可选,默认值为2,数值越大,滚动越快)

Width (760) 容器可视宽度 (可选,默认值为容器初始设置的宽度)

Height (52) 容器可视高度 (可选,默认值为容器初始设置的高度)

Timer (50) 定时器 (可选,默认值为30,数值越小,滚动的速度越快,1000=1秒,建议不小于20)

DelayTime (5000) 间歇停顿延迟时间(可选,默认为0不停顿,1000=1秒)

WaitTime (3000) 开始时的等待时间(可选,默认或0为不等待,1000=1秒)

ScrollStep (52) 间歇滚动间距 (可选,默认为翻屏宽/高度,该数值与延迟均为0则为鼠标悬停控制,-1禁止鼠标控制)

使用建议:

1、建议直接赋予容器的显示区域的宽度和高度,如(<div id="marquee" style="width:760pxheight:52px">......</div>)

2、建议为容器添加样式overflow = auto,如(<div id="marquee" style="width:760pxheight:52pxoverflow:auto">......</div>)

3、为了更准确的获取滚动区域的宽度和高度,请尽可能将各滚动单位直接赋予正确宽高度

4、对于TABLE标记的横向滚动,需要对TABLE添加样式display = inline,如(<div id="marquee" style="width:760pxheight:52pxoverflow:auto"><table style="display:inline">......</table></div>)

5、对于翻屏滚动或间歇滚动,要注意各滚动单位间的间距,同时需要对容器的可视高度和可视宽度做好准确的设置,对于各滚动单位间的间距可以通过设置行间距或者单元格的高宽度来进行调整

6、对于LI自动换行的问题暂时没有更好的解决办法,建议将其转换成表格(TABLE)的形式来达到同等的效果

7、针对横向滚动的文字段落,如果最末端是以空格" "结束的,请将空格" "转换成" "

8、鼠标悬停滚动思想源自Flash,所以有一定的局限性(容器内仅允许用图片<img>或者带链接的图片<a><img></a>的形式,并需要禁止其自动换行)

\***程序制作/版权所有:qqlxinye.cn

function Marquee()

{

this.ID = document.getElementById(arguments[0])

if(!this.ID)

{

alert("您要设置的\"" + arguments[0] + "\"初始化错误\r\n请检查标签ID设置是否正确!")

this.ID = -1

return

}

this.Direction = this.Width = this.Height = this.DelayTime = this.WaitTime = this.CTL = this.StartID = this.Stop = this.MouseOver = 0

this.Step = 1

this.Timer = 30

this.DirectionArray = {"top":0 , "up":0 , "bottom":1 , "down":1 , "left":2 , "right":3}

if(typeof arguments[1] == "number" || typeof arguments[1] == "string")this.Direction = arguments[1]

if(typeof arguments[2] == "number")this.Step = arguments[2]

if(typeof arguments[3] == "number")this.Width = arguments[3]

if(typeof arguments[4] == "number")this.Height = arguments[4]

if(typeof arguments[5] == "number")this.Timer = arguments[5]

if(typeof arguments[6] == "number")this.DelayTime = arguments[6]

if(typeof arguments[7] == "number")this.WaitTime = arguments[7]

if(typeof arguments[8] == "number")this.ScrollStep = arguments[8]

this.ID.style.overflow = this.ID.style.overflowX = this.ID.style.overflowY = "hidden"

this.ID.noWrap = true

this.IsNotOpera = (navigator.userAgent.toLowerCase().indexOf("opera") == -1)

if(arguments.length >= 7)this.Start()

}

Marquee.prototype.Start = function()

{

if(this.ID == -1)return

if(this.WaitTime <800)this.WaitTime = 800

if(this.Timer <20)this.Timer = 20

if(this.Width == 0)this.Width = parseInt(this.ID.style.width)

if(this.Height == 0)this.Height = parseInt(this.ID.style.height)

if(typeof this.Direction == "string")this.Direction = this.DirectionArray[this.Direction.toString().toLowerCase()]

this.HalfWidth = Math.round(this.Width / 2)

this.HalfHeight = Math.round(this.Height / 2)

this.BakStep = this.Step

this.ID.style.width = this.Width + "px"

this.ID.style.height = this.Height + "px"

if(typeof this.ScrollStep != "number")this.ScrollStep = this.Direction >1 ? this.Width : this.Height

var templateLeft = "<table cellspacing='0' cellpadding='0' style='border-collapse:collapsedisplay:inline'><tr><td noWrap=true style='white-space: nowrapword-break:keep-all'>MSCLASS_TEMP_HTML</td><td noWrap=true style='white-space: nowrapword-break:keep-all'>MSCLASS_TEMP_HTML</td></tr></table>"

var templateTop = "<table cellspacing='0' cellpadding='0' style='border-collapse:collapse'><tr><td>MSCLASS_TEMP_HTML</td></tr><tr><td>MSCLASS_TEMP_HTML</td></tr></table>"

var msobj = this

msobj.tempHTML = msobj.ID.innerHTML

if(msobj.Direction <= 1)

{

msobj.ID.innerHTML = templateTop.replace(/MSCLASS_TEMP_HTML/g,msobj.ID.innerHTML)

}

else

{

if(msobj.ScrollStep == 0 &&msobj.DelayTime == 0)

{

msobj.ID.innerHTML += msobj.ID.innerHTML

}

else

{

msobj.ID.innerHTML = templateLeft.replace(/MSCLASS_TEMP_HTML/g,msobj.ID.innerHTML)

}

}

var timer = this.Timer

var delaytime = this.DelayTime

var waittime = this.WaitTime

msobj.StartID = function(){msobj.Scroll()}

msobj.Continue = function()

{

if(msobj.MouseOver == 1)

{

setTimeout(msobj.Continue,delaytime)

}

else

{ clearInterval(msobj.TimerID)

msobj.CTL = msobj.Stop = 0

msobj.TimerID = setInterval(msobj.StartID,timer)

}

}

msobj.Pause = function()

{

msobj.Stop = 1

clearInterval(msobj.TimerID)

setTimeout(msobj.Continue,delaytime)

}

msobj.Begin = function()

{

msobj.ClientScroll = msobj.Direction >1 ? msobj.ID.scrollWidth / 2 : msobj.ID.scrollHeight / 2

if((msobj.Direction <= 1 &&msobj.ClientScroll <= msobj.Height + msobj.Step) || (msobj.Direction >1 &&msobj.ClientScroll <= msobj.Width + msobj.Step)) {

msobj.ID.innerHTML = msobj.tempHTML

delete(msobj.tempHTML)

return

}

delete(msobj.tempHTML)

msobj.TimerID = setInterval(msobj.StartID,timer)

if(msobj.ScrollStep <0)return

msobj.ID.onmousemove = function(event)

{

if(msobj.ScrollStep == 0 &&msobj.Direction >1)

{

var event = event || window.event

if(window.event)

{

if(msobj.IsNotOpera)

{

msobj.EventLeft = event.srcElement.id == msobj.ID.id ? event.offsetX - msobj.ID.scrollLeft : event.srcElement.offsetLeft - msobj.ID.scrollLeft + event.offsetX

}

else

{

msobj.ScrollStep = null

return

}

}

else

{

msobj.EventLeft = event.layerX - msobj.ID.scrollLeft

}

msobj.Direction = msobj.EventLeft >msobj.HalfWidth ? 3 : 2

msobj.AbsCenter = Math.abs(msobj.HalfWidth - msobj.EventLeft)

msobj.Step = Math.round(msobj.AbsCenter * (msobj.BakStep*2) / msobj.HalfWidth)

}

}

msobj.ID.onmouseover = function()

{

if(msobj.ScrollStep == 0)return

msobj.MouseOver = 1

clearInterval(msobj.TimerID)

}

msobj.ID.onmouseout = function()

{

if(msobj.ScrollStep == 0)

{

if(msobj.Step == 0)msobj.Step = 1

return

}

msobj.MouseOver = 0

if(msobj.Stop == 0)

{

clearInterval(msobj.TimerID)

msobj.TimerID = setInterval(msobj.StartID,timer)

}

}

}

setTimeout(msobj.Begin,waittime)

}

Marquee.prototype.Scroll = function()

{

switch(this.Direction)

{

case 0:

this.CTL += this.Step

if(this.CTL >= this.ScrollStep &&this.DelayTime >0)

{

this.ID.scrollTop += this.ScrollStep + this.Step - this.CTL

this.Pause()

return

}

else

{

if(this.ID.scrollTop >= this.ClientScroll)

{

this.ID.scrollTop -= this.ClientScroll

}

this.ID.scrollTop += this.Step

}

break

case 1:

this.CTL += this.Step

if(this.CTL >= this.ScrollStep &&this.DelayTime >0)

{

this.ID.scrollTop -= this.ScrollStep + this.Step - this.CTL

this.Pause()

return

}

else

{

if(this.ID.scrollTop <= 0)

{

this.ID.scrollTop += this.ClientScroll

}

this.ID.scrollTop -= this.Step

}

break

case 2:

this.CTL += this.Step

if(this.CTL >= this.ScrollStep &&this.DelayTime >0)

{

this.ID.scrollLeft += this.ScrollStep + this.Step - this.CTL

this.Pause()

return

}

else

{

if(this.ID.scrollLeft >= this.ClientScroll)

{

this.ID.scrollLeft -= this.ClientScroll

}

this.ID.scrollLeft += this.Step

}

break

case 3:

this.CTL += this.Step

if(this.CTL >= this.ScrollStep &&this.DelayTime >0)

{

this.ID.scrollLeft -= this.ScrollStep + this.Step - this.CTL

this.Pause()

return

}

else

{

if(this.ID.scrollLeft <= 0)

{

this.ID.scrollLeft += this.ClientScroll

}

this.ID.scrollLeft -= this.Step

}

break

}

}

//-->

跑马灯效果,如果静态测试的时候没有问题,改成动态读取后,就出问题了,

你可以这样来测试,把从数据库里读取的语句删除,只保留一条,自己复制粘贴到代码位,然后用for next之类的来循环,看还会不会有问题。

一般这种跑马灯效果,就是通过计算图片的宽度,和图片所在的容器的宽度,用js控制容器的margin来实现的,所以静态改成动态后,一般都是里面的图片的尺寸出了问题,检查下CSS样式代码,把里面所有的图片,尺寸设置成一样的。

另外还有一种可能就是动态读取出来的图片“数量”不够。

呃, 这都是我以前做web时,在用跑马灯效果时遇到过的情况,希望能帮助到你!

要实现简单的跑马灯效果其实运用html中<marquee></marquee>标签就可以达到了基本属性如下: 1.滚动方向direction(包括4个值:up、 down、 left和 right) 2.滚动方式behavior(scroll:循环滚动,默认效果; slide:只滚动一次就停止; alternate:来回交替进行滚动) 3.滚动速度scrollamount(滚动速度是设置每次滚动时移动的长度,以像素为单位) 4.滚动延迟scrolldelay(设置滚动的时间间隔,单位是毫秒) 5.滚动循环loop(默认值是-1,滚动会不断的循环下去) 6.滚动范围width、height 7.滚动背景颜色bgcolor 8.空白空间hspace、vspace如果想要更多的动画效果,更多选择jquery.marquee.js这款插件——ul里的啥都能滚并自带悬停效果1.html 中写入<ul id="marquee"><li></li></ul> 2.js中调入$("#marquee").marquee()即可 3.css比较简单,一般自己写,大致如下: ul.marquee{display:blockline-height:1position:relativeoverflow:hiddenwidth:400pxheight:22px}ul.marquee li{ position:absolutetop:-999emleft:0display:blockwhite-space:nowrap padding:3px5pxtext-indent:0.8em} 4.相关参数如下: {yScroll:"top" // 初始滚动方向 (还可以是"top" 或 "bottom") showSpeed:850 // 初始下拉速度 scrollSpeed:12 // 滚动速度 pauseSpeed:5000 // 滚动完到下一条的间隔时间 pauseOnHover:true // 鼠标滑向文字时是否停止滚动 loop:-1 // 设置循环滚动次数 (-1为无限循环) fxEasingShow:"swing" // 缓冲效果 fxEasingScroll:"linear" // 缓冲效果 cssShowing:"marquee-showing" //定义class event handlers init:null // 初始调用函数 beforeshow:null // 滚动前回调函数 show:null // 当新的滚动内容显示时回调函数 aftershow:null // 滚动完了回调函数 }