Html Img的几个属性_存在个问题
宽width 高height
文件长度fileSize
显示图片列表的时候挺好用。
嗯，还要加个边框border. 但现在有个问题，fileSize有时候会是-1，不知道怎么回事。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=??????">
<script language="javascript">
<!--
function imgSel()
{
var img = new Image();
img.src = document.imageForm.file.value;
alert(img.width + '*' + img.height + ' size:' + img.fileSize);
document.images['img'].src = img.src;
}
-->
</script>
</head>
<body>
<form name="imageForm">
宽: <input name="width" type="text" size="6"> 高: <input name="height" type="text" size="6"> 大小: <input name="size" type="text" size="6"><br>
<input name="file" type="file" onChange="imgSel()"><br>
<img src="" id="img" border="1">
</form>
</body>
</html>
简单测试了一下，用下面的代码可以
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<script>
var img=null;
function s()
{
if(img)img.removeNode(true);
img=document.createElement("img");
img.style.position="absolute";
img.style.visibility="hidden";
img.attachEvent("onreadystatechange",orsc);
img.attachEvent("onerror",oe);
document.body.insertAdjacentElement("beforeend",img);
img.src=inp.value;
}
function oe()
{
alert("cant load img");
}
function orsc()
{
if(img.readyState!="complete")return false;
alert("图片大小："+img.offsetWidth+"X"+img.offsetHeight);
alert("图片尺寸："+img.fileSize);
}
</script>
<input id=inp type="file">
<br>
<button onclick="s()">Test</button>
</BODY>
</HTML>
