javascript从右到左的文字

时间:2010-03-31 17:47:13  来源:第二电脑网  作者:第二电脑网

  第二电脑网导读:sp;  var POSITION = 150   var DELAY    = 10   var scroll = new statusMessageObject() function statusMessageObject(p,d) {  this.msg = MESSAGE  this.out = " "  this.pos = POSITION  this.delay = DELAY  this.i   &...
  正文:

脚本说明:

把如下代码加入<head>区域中

<script language="JavaScript">

   var MESSAGE  =   "  欢迎来到正点网络 ,请多提意见。谢谢!    "

   var POSITION = 150

   var DELAY    = 10

   var scroll = new statusMessageObject()

 function statusMessageObject(p,d) {

  this.msg = MESSAGE

  this.out = " "

  this.pos = POSITION

  this.delay = DELAY

  this.i     = 0

  this.reset = clearMessage}

function clearMessage() {

  this.pos = POSITION}

function scroller() {

  for (scroll.i = 0; scroll.i < scroll.pos; scroll.i++) {

    scroll.out += " "}

  if (scroll.pos >= 0)

   scroll.out += scroll.msg

  else scroll.out = scroll.msg.substring(-scroll.pos,scroll.msg.length)

  window.status = scroll.out

  scroll.out = " "

  scroll.pos--

  if (scroll.pos < -(scroll.msg.length)) {

   scroll.reset()}

  setTimeout ('scroller()',scroll.delay)}

function snapIn(jumphotoshop/ target=_blank class=infotextkey>pspaces,position) {

  var msg = scroll.msg

  var out = ""

  for (var i=0; i<position; i++)

    {out += msg.charAt(i)}

  for (i=1;i<jumpSpaces;i++)

    {out += " "}

  out += msg.charAt(position)

  window.status = out

  if (jumpSpaces <= 1) {

    position++

    if (msg.charAt(position) == ' ')

      {position++ }

    jumpSpaces = 100-position

  } else if (jumpSpaces >  3)

       {jumpSpaces *= .75}

  else

    {jumpSpaces--}

  if (position != msg.length) {

    var cmd = "snapIn(" + jumpSpaces + "," + position + ")";

    scrollID = window.setTimeout(cmd,scroll.delay);

  } else {    window.status=""

    jumpSpaces=0

    position=0

    cmd = "snapIn(" + jumpSpaces + "," + position + ")";

    scrollID = window.setTimeout(cmd,scroll.delay);

    return false }

  return true}

snapIn(100,0);

</script>


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