请帮助图像显示... [英] Help with image display please...
问题描述
我正在尝试创建一个简单的网络图库来交换我的图像
http：/ /dev.lenosphotography.com
转到家庭部分（应在底部打开图片栏 - 您可能需要
向下滚动 - 我还没有最终确定位置） - 当你点击
图像缩略图时，它会调用一个页面（使用此代码将引用传递给图像名称
。 swapfade代码basicall交换通过淡化一个图像为
另一个...所以我加载空白的jpg，其大小设置为真实图像W / H -
然后调用swapfade函数...
< script language =" javascript1.2" type =" text / javascript">
var iWidth = 0;
var iHeight = 0;
img1 = new Image（）;
img1.src =' '<％= Request.QueryString（" photo"）％>'';
iHeight = img1.height;
iWidth = img1.width;
document.write（"< img src =''images / photoblank.jpg''border ='' 1''id =''photo''
width ="，iWidth，" height ="，iHeight，">"）;
// alert（document.documentElement.innerHTML）;
swapfade（document.getElementById（''照片''），''<％= Requ est.QueryString（
" photo"）％>''，''1'，''''）;
< / script>
_________________________________________________-
99％的时间工作 - 但每一次所以图像经常会出现
宽度和高度= 0 - 我确信这是因为图像没有完全支付，所以在img1.height行之前加载了
我已经在
这个网上搜索了这个，并找到了我需要确保图像完整/加载的地方
测试它的高度和宽度 - 我尝试过的任何工作都没有...
感谢您的帮助！
I am trying to create a simple web gallery to swap my images at
http://dev.lenosphotography.com
Go to the family section (should open a image bar at bottom - you may have
to scroll down - I have not finalized placement) - when you click on the
image thumbnail it calls a page (passing the reference to the "image name"
with this code. The swapfade code basicall swaps via fading one image for
another.. so I load the blank jpg with the size set to the real images W/H -
then call the swapfade function...
<script language="javascript1.2" type="text/javascript">
var iWidth = 0;
var iHeight = 0;
img1 = new Image();
img1.src = ''<%=Request.QueryString( "photo" )%>'';
iHeight=img1.height;
iWidth=img1.width;
document.write ("<img src=''images/photoblank.jpg'' border=''1'' id=''photo''
width=", iWidth, " height=", iHeight, ">");
// alert(document.documentElement.innerHTML);
swapfade(document.getElementById(''photo''),''<%=Requ est.QueryString(
"photo" )%>'', ''1'', '''');
</script>
_________________________________________________-
This works 99% of the time - but every so often the image comes up with
width and height = 0 - I am sure that it is due to the image not being fully
loaded before the img1.height line is called.. I have scoured the net on
this and found where I need to make sure the image is complete/loaded before
testing for it''s height and width- nothing I have tried has worked yet...
Thanks for your help!
推荐答案
Hiya Doug
您是否尝试过onload事件处理程序？
您需要将img1.src =<％.....之后的所有内容移动到
单独的函数中，然后将img1.onload设置为此函数的名称。
这样的东西
- = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = -
< script language =" javascript1.2" type =" text / javascript">
var iWidth = 0;
var iHeight = 0;
img1 = new Image（）;
img1.src =''<％= Request.QueryString（" photo"）％>'';
img1.onload = imgLoaded;
函数imgLoaded（anImg）{// anImg自动设置....
iHeight = anImg.height;
iWidth = anImg.width;
document.write（"< img src =''images / photoblank.jpg''border =''1' '
id =''photo''
width ="，iWidth，" height ="，iHeight，">"）;
// alert（document.documentElement.innerHTML）;
swapfade（document.getElementById（''photo''），''<％= Requ est.QueryString（
" photo"）％>''，''''，''''）;
}
< /脚本>
- = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = -
这有什么好处给你？
tihu
Hiya Doug
Have you tried the onload event handler?
You will need to move everything after img1.src = <%..... into a
separate function then set img1.onload to the name of this function.
Something like this
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
<script language="javascript1.2" type="text/javascript">
var iWidth = 0;
var iHeight = 0;
img1 = new Image();
img1.src = ''<%=Request.QueryString( "photo" )%>'';
img1.onload = imgLoaded;
function imgLoaded( anImg ) { //anImg is set automatically....
iHeight=anImg.height;
iWidth=anImg.width;
document.write ("<img src=''images/photoblank.jpg'' border=''1''
id=''photo''
width=", iWidth, " height=", iHeight, ">");
// alert(document.documentElement.innerHTML);
swapfade(document.getElementById(''photo''),''<%=Requ est.QueryString(
"photo" )%>'', ''1'', '''');
}
</script>
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Is that any good to you?
tihu
我会试一试并报告回来......谢谢！
tihu < TI ******** @ gmail.com>在消息中写道
news：11 ********************** @ g47g2000cwa.googlegr oups.com ...
I''ll give it a try and report back...THANKS!
"tihu" <ti********@gmail.com> wrote in message
news:11**********************@g47g2000cwa.googlegr oups.com...
Hiya Doug
您是否尝试过onload事件处理程序？
您需要在img1.src =<％.....之后移动所有内容单独的函数然后将img1.onload设置为此函数的名称。
这样的东西
- = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = -
< script language =" javascript1。 2英寸type =" text / javascript">
var iWidth = 0;
var iHeight = 0;
img1 = new Image（）;
img1.src =''<％= Request.QueryString（" photo"）％>'';
img1.onload = imgLoaded;
函数imgLoaded（anImg）{ //自动设置anImg ....
iHeight = anImg.height;
iWidth = anImg.width;
document.write（"< img src =' 'images / photoblank.jpg''border =''1''
id =''photo''
width ="，iWidth，" height ="，iHeight，"> "）;
// alert（document.documentElement.innerHTML）;
swapfade（document.getElementById（''photo''），''<％= Requ est.QueryString（
照片）％>''，''1'，''''）;
}
< / script>
- = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = - = -
是对你有什么好处？
tihu
Hiya Doug
Have you tried the onload event handler?
You will need to move everything after img1.src = <%..... into a
separate function then set img1.onload to the name of this function.
Something like this
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
<script language="javascript1.2" type="text/javascript">
var iWidth = 0;
var iHeight = 0;
img1 = new Image();
img1.src = ''<%=Request.QueryString( "photo" )%>'';
img1.onload = imgLoaded;
function imgLoaded( anImg ) { //anImg is set automatically....
iHeight=anImg.height;
iWidth=anImg.width;
document.write ("<img src=''images/photoblank.jpg'' border=''1''
id=''photo''
width=", iWidth, " height=", iHeight, ">");
// alert(document.documentElement.innerHTML);
swapfade(document.getElementById(''photo''),''<%=Requ est.QueryString(
"photo" )%>'', ''1'', '''');
}
</script>
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Is that any good to you?
tihu
Hiya。
抱歉，我在上面的回复中犯了一个错误。
imgLoaded函数没有得到图像副本，它收到一个
事件对象。
所以imgLoaded函数需要是
函数imgLoaded（事件）{
iHeight = img1.height;
iWidth = img1.width;
祝你好运
Hiya.
Sorry I made a mistake in my above reply.
The imgLoaded function doesnt get a copy of the image, it receives an
event object.
So the imgLoaded function needs to be
function imgLoaded( event ) {
iHeight=img1.height;
iWidth=img1.width;
Good luck
这篇关于请帮助图像显示...的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
