在大學里的時候,沒有什么危機感,無視自己知識的貧乏。每天僅憑著自己對知識的興趣充實著自己。偶爾在新浪博客里寫寫文章,懺悔自己虛度的年華。那時候學會了使用網頁特效代碼,現在學了java,就試著去理解一下它們。
<script language="JavaScript">
step=0
function flash_title()
{ step++
if (step==5)
{step=1}
if (step==1) {
document.title=' ◆◇◇認識你真好◇◇◆ '}
if (step==2)
{document.title=' ◇◆◇認識你真好◇◆◇ '}
if (step==3)
{document.title=' ◇◇◆認識你真好◆◇◇ '}
if (step==4) {document.title=' ◇◆◇認識你真好◇◆◇ '}
setTimeout("flash_title()",400); }
flash_title() ;
</script>
這段代碼中只涉及一點非java的內容,就是document.title=' ';這是定義本頁的標題欄的,在單引號里寫的東西和在<title></title>之間寫東西是一樣的。
所以這段代碼就是:
----定義一個簡單的java 函數
----設定函數每一步的執行間隔
----實例化函數(相當于在main里調用)。
<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 = 10
var MESSAGE = "愿你開心每一天!"
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>
這里的 window.status="" 是定義狀態欄的,這個例子和上一個差不多,只是看起來復雜了些。
posted on 2007-04-26 09:56
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