JS实现浏览器状态栏文字从右向左弹出效果代码

2019-11-20 11:23:53

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本文实例讲述了JS实现浏览器状态栏文字从右向左弹出效果。分享给大家供大家参考，具体如下：

这里状态栏文字弹出代码，从右向左弹出，通过修改Script中的这些代码片段可改变效果：

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

运行效果截图如下：

在线演示地址如下：

http://demo.VeVB.COm/js/2015/js-status-bar-txt-scroll-codes/

具体代码如下：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><TITLE>状态栏文字弹出代码，从右向左弹出</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 = 100var DELAY  = 4 var MESSAGE = "状态栏文字快速的一个一个弹出！！！  " 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>

希望本文所述对大家JavaScript程序设计有所帮助。

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