這篇文章主要介紹了JS實(shí)現(xiàn)瀏覽器狀態(tài)欄文字從右向左彈出效果,涉及JavaScript結(jié)合時(shí)間函數(shù)遍歷字符串及動(dòng)態(tài)改變狀態(tài)欄顯示效果的相關(guān)技巧,具有一定參考借鑒價(jià)值,需要的朋友可以參考下

本文實(shí)例講述了JS實(shí)現(xiàn)瀏覽器狀態(tài)欄文字從右向左彈出效果。分享給大家供大家參考，具體如下：

這里狀態(tài)欄文字彈出代碼，從右向左彈出，通過(guò)修改Script中的這些代碼片段可改變效果：

var POSITION = 100
var DELAY = 4
var MESSAGE = "這里是你想要的文字！"

運(yùn)行效果截圖如下：

在線(xiàn)演示地址如下：

http://demo.jb51.net/js/2015/js-status-bar-txt-scroll-codes/

具體代碼如下：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>狀態(tài)欄文字彈出代碼，從右向左彈出</TITLE>
</HEAD>
<BODY>
<script language="JavaScript"> 
<!--
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
}
var POSITION = 100
var DELAY  = 4
 var MESSAGE = "狀態(tài)欄文字快速的一個(gè)一個(gè)彈出！??！  " 
var scroll = new statusMessageObject()
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(jumpSpaces,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>
</BODY>
</HTML>

希望本文所述對(duì)大家JavaScript程序設(shè)計(jì)有所幫助。

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