如果是这样的话。。建议你用我这个。。然后把你要的照片传到站内。。在进行显示处理。。。
<html>
<head>
<script language="javascript" type="text/javascript">
var flag = false
function $(e) {return document.getElementById(e)}
function DrawImage(ImgD) {
var h = $("uploadimage").height
var w = $("uploadimage").width
if (w >0 &&h >0) {
flag = true
if (w / h >= 120 / 80) {
if (w >120) {
$("uploadimage").width = 120
$("uploadimage").height = (h * 120) / w
} else {
$("uploadimage").width = w
$("uploadimage").height = h
}
$("uploadimage").alt = w + "×" + h
}
else {
if (h >80) {
$("uploadimage").height = 80
$("uploadimage").width = (w * 80) / h
} else {
$("uploadimage").width = w
$("uploadimage").height = h
}
$("uploadimage").alt = w + "×" + h
}
}
}
function FileChange(Value) {
flag = false
document.all.uploadimage.alt = ""
var pos = Value.lastIndexOf("\\") + 1
Value = Value.substring(pos, Value.length)
document.all.uploadimage.src = "images/" + Value
}
function BeforeUpLoad() {
if (flag) alert("OK")else alert("FAIL")
}
</script>
</head>
<body>
<INPUT style="WIDTH: 143pxHEIGHT: 18px" type=file size=8 name=pic onchange="javascript:FileChange(this.value)">
<IMG id=uploadimage src="" onload="javascript:DrawImage(this)" ><BR>
<Button onclick="javascript:BeforeUpLoad()">提交</Button>
</body>
</html>
无需插件：<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<title>By：DragonDean</title>
<script type="text/javascript">
//下面用于图片上传预览功能
function setImagePreview(avalue) {
var docObj=document.getElementById("doc")
var imgObjPreview=document.getElementById("preview")
if(docObj.files &&docObj.files[0])
{
//火狐下，直接设img属性
imgObjPreview.style.display = 'block'
imgObjPreview.style.width = '150px'
imgObjPreview.style.height = '180px'
//imgObjPreview.src = docObj.files[0].getAsDataURL()
//火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式
imgObjPreview.src = window.URL.createObjectURL(docObj.files[0])
}
else
{
//IE下，使用滤镜
docObj.select()
var imgSrc = document.selection.createRange().text
var localImagId = document.getElementById("localImag")
//必须设置初始大小
localImagId.style.width = "150px"
localImagId.style.height = "180px"
//图片异常的捕捉，防止用户修改后缀来伪造图片
try{
localImagId.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)"
localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc
}
catch(e)
{
alert("您上传的图片格式不正确，请重新选择!")
return false
}
imgObjPreview.style.display = 'none'
document.selection.empty()
}
return true
}
</script>
</head>
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td height="101" align="center">
<div id="localImag"><img id="preview" src="http://blog.chuangling.net/Public/images/top.jpg" width="150" height="180" style="display: blockwidth: 150pxheight: 180px"></div>
</td>
</tr>
<tr>
<td align="center" style="padding-top:10px"><input type="file" name="file" id="doc" style="width:150px" onchange="javascript:setImagePreview()"></td>
</tr>
</tbody>
</table>
</body>
</html>
