限制图片上传长宽的javascript代码,限制图片上传长宽的javascript代码
【 tulaoshi.com - Javascript 】
<html
<head
<titleUpload Image</title
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
</head
<body bgcolor="#FFFFFF" text="#000000"
<form name="IUpload" action="upfile.asp" method="post"
<p<input type="file" name="picsrc" size="40" onchange="picshow.src="http://img.jcwcn.com/attachment/portal"
<input type="button" value="上载" onclick="detect()"</p</form
<p<img name="picshow" src="http://img.jcwcn.com/attachment/portal/jcwcj/2005-12/10/05121012245462162.gif" title="图像预览"</p
</body
</html
<SCRIPT LANGUAGE="JavaScript"
<!--
function imgExceedSize(w,h){
if(!document.IUpload.picsrc.value==""){
if(picshow.widthw||picshow.heighth){
alert("图像尺寸："+picshow.width+"X"+picshow.height+"。n图像尺寸过大！你只能上传尺寸为 "+w+"×"+h+"的图像，请重新浏览图片！");
return true;
}else{
return false;
}
}else{
return true;
}
}
function detect(){
var ok=imgExceedSize(50,50);
if(ok){
document.IUpload.reset();
}else{
document.IUpload.submit();
}
}
//--
</SCRIPT
来源:https://www.tulaoshi.com/n/20160129/1482700.html
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