| 阿七 |
2006-04-03 14:41 |
如何在网页上实现进度条 w}bEufU+2
出处 O&?CoA?
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进度条的实现可以通过下面的javascript实现： 'a-5 U
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<table align="center"><tr><td> 4M0v1`k
<div style="font-size:8pt;padding:2px;border:solid black 1px"> :|m~<'g
<span id="progress1"> </span> MR)KLM0
<span id="progress2"> </span> P2
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<span id="progress3"> </span> G8(i).Q
<span id="progress4"> </span> }d~FT re
<span id="progress5"> </span> 2;?wN`}5g=
<span id="progress6"> </span> dnX`
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<span id="progress7"> </span> >nIc F m
<span id="progress8"> </span> Sj{rvW
<span id="progress9"> </span> S^Wq a:;
</div> L$u&~"z-
</td></tr></table> [>J~M!yu:r
<script language="javascript"> 8F\Msx
var progressEnd = 9; // set to number of progress <span>'s. ^0ZKHR(}e
var progressColor = 'blue'; // set to progress bar color 6 dS1\Y
var progressInterval = 1000; // set to time between updates (milli-seconds) b1 ,T!xL
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var progressAt = progressEnd; +} ! F(c
var progressTimer; &v9PT!R~
function progress_clear() { u &d v[
for (var i = 1; i <= progressEnd; i++) document.getElementById('progress'+i).style.backgroundColor = 'transparent'; NX{-D}1X=
progressAt = 0; ZhbY, wJ,
} |7Xpb
function progress_update() { #<i> <EG
progressAt++; W$MEbf%1
if (progressAt > progressEnd) progress_clear(); *6x ^w %=A
else document.getElementById('progress'+progressAt).style.backgroundColor = progressColor; :: 72~'tw
progressTimer = setTimeout('progress_update()',progressInterval); 6$vh qg}f
} l[\ ,
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function progress_stop() { soVZ z3F
clearTimeout(progressTimer); h, 6S$,UI
progress_clear(); L z>{FOR
} CT:eV7<>s
progress_update(); // start progress bar |XdrO
</script> @61N[
实现的原理就是通过修改spanid的backgroundColor 值和setTimeout('progress_update()',progressInterval); >5vl{{,$K
定时器函数来实现的。 |
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