Posted on 2008-04-15 18:07
G_G 閱讀(1620)
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javascript
js 上
限制：<input?type="text"?size="4"?value="10"?name="fileSizeLimit"?id="fileSizeLimit"/>?K
<input?type="file"?name="file1"?id="file1"?size="40"?onchange="changeSrc(this)"/>
<br>
<img?src=http://blog.xunuo.com/blog/images/icons/23.gif?id="fileChecker"?alt="test"/>
<script?type="text/javascript">
var?oFileChecker?=?document.getElementById("fileChecker");
function?changeSrc(filePicker)
{
????oFileChecker.src?=?filePicker.value;
}
oFileChecker.onreadystatechange?=?function?()
{
????if?(oFileChecker.readyState?==?"complete")
????{
????????checkSize();
????}
}
function?checkSize()
{
????var?limit??=?document.getElementById("fileSizeLimit").value?*?1024;
????if?(oFileChecker.fileSize?>?limit)
????{
????????alert("too?large");
????}
????else
????{
????????alert("ok");
????}
}
</script>??
IE
<html>?
<input?type="file"?name="file1"?onchange="ShowSize(this.value)">?
<script?language="JavaScript">?
<!--?
function?ShowSize(files)?
{?
??var?fso,f;?
??fso=new?ActiveXObject("Scripting.FileSystemObject");?
??f=fso.GetFile(files);?
??alert(?(f.size/(1024*1024))+"?Bytes");?
}?
//-->?
</script>?
</html>