| 阿七 |
2006-04-03 14:41 |
如何在网页上实现进度条 @Z2np{X:
出处 ml<tH2Qx3C
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进度条的实现可以通过下面的javascript实现： _DH^ K 9,9
<table align="center"><tr><td> RB4 +"QUh
<div style="font-size:8pt;padding:2px;border:solid black 1px"> x7U=1y(
<span id="progress1"> </span> iER@_?
<span id="progress2"> </span> X6r0+D5AvB
<span id="progress3"> </span> fBj)HoHQW
<span id="progress4"> </span> [
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<span id="progress5"> </span> r
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<span id="progress6"> </span> \yC /OLXq
<span id="progress7"> </span> #79[Qtkrhm
<span id="progress8"> </span> *LU/3H|}
<span id="progress9"> </span> Dzf\m>H[
</div> b%%r`j,'JE
</td></tr></table> #$x
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<script language="javascript"> _X~O 6e-!
var progressEnd = 9; // set to number of progress <span>'s. BEvY& 3%l
var progressColor = 'blue'; // set to progress bar color LwK]fFtu
var progressInterval = 1000; // set to time between updates (milli-seconds) [Hx(a.,d
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var progressAt = progressEnd; . i
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var progressTimer; M|mfkIk0MB
function progress_clear() { G
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for (var i = 1; i <= progressEnd; i++) document.getElementById('progress'+i).style.backgroundColor = 'transparent'; K E~Q
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progressAt = 0; 3HpqMz
} i[IFD]Xy!j
function progress_update() {
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progressAt++; A}(]J!rc
if (progressAt > progressEnd) progress_clear(); JM|HnyI
else document.getElementById('progress'+progressAt).style.backgroundColor = progressColor; t4_yp_
progressTimer = setTimeout('progress_update()',progressInterval); kt2_WW[
} ;v@ G
function progress_stop() { Lz. khE<
clearTimeout(progressTimer); |p&EP2?T
progress_clear(); CF{b Yf^%
} $qQYxx@
progress_update(); // start progress bar r6Yd"~ n
</script> /B@{w-N
实现的原理就是通过修改spanid的backgroundColor 值和setTimeout('progress_update()',progressInterval); !Ud'(iGa
定时器函数来实现的。 |
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