图片div透明度渐变

JS调整图片透明度

最新推荐文章于 2025-07-17 14:36:42 发布

转载最新推荐文章于 2025-07-17 14:36:42 发布 · 1.6k 阅读

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#div #function #javascript #filter

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<title>JavaScript改变图片透明度</title>
<script language="JavaScript">
function makevisible(cur,which){
if (which==0)
cur.filters.alpha.opacity=100
else
cur.filters.alpha.opacity=20
}
</script>
<script language="javascript">
var min=10;
var max=100;
var number=1;
function OnMouseOver(obj)
{
if(obj.changing)
    clearInterval(obj.changing);
obj.changing=setInterval("add("+obj.id+")",10);
}
function OnMouseOut(obj)
{
if(obj.changing)
    clearInterval(obj.changing);
obj.changing=setInterval("sub("+obj.id+")",10);
}
function add(obj)
{
if(obj.filters.Alpha.Opacity > max)
{
    clearInterval(obj.changing);
    obj.changing=false;
    obj.filters.Alpha.Opacity = max;
}
else
    obj.filters.Alpha.Opacity += number;
test1.innerText = "img1:"+img1.filters.Alpha.Opacity;
test2.innerText = "img2:"+img2.filters.Alpha.Opacity;
}
function sub(obj)
{
if(obj.filters.Alpha.Opacity < min)
{
    clearInterval(obj.changing);
    obj.changing=false;
    obj.filters.Alpha.Opacity = min;
}
else
    obj.filters.Alpha.Opacity += -number;
test1.innerText = "img1:"+img1.filters.Alpha.Opacity;
test2.innerText = "img2:"+img2.filters.Alpha.Opacity;
}
</script>
<img id='img1' src="http://codefans.net/jscss/demoimg/wall_s5.jpg" style="filter:Alpha(Opacity=10)" onmouseover="OnMouseOver(this)" onmouseout="OnMouseOut(this)">
<img id='img2' src="http://codefans.net/jscss/demoimg/wall_s6.jpg" style="filter:Alpha(Opacity=10)" onmouseover="OnMouseOver(this)" onmouseout="OnMouseOut(this)">
<div id='test1'>img1:10</div>
<div id='test2'>img2:10</div>