我正在尝试找到文件的大小,但它没有显示,请帮帮我
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<style>
div {
padding: 1px;
border-bottom: ridge;
width: 600px
}
此功能用于检查用户是否输入图像。
</style>
<script language="javascript">
function checkImage() {
if (document.form2.path.value == "") {
alert("Enter path of Image");
return false;
}
return true;
};
此功能无法正常工作 在这里,我试图检查文件的大小,但事实并非如此 工作
function checkSize(){
var images=document.form2.path.value;
if (images != "") {
var f =document.getElementById("loadImage").files[0];
alert(f.size);
return false;
}
}
</script>
</head>
<body>
<center>
<div>
<h2>Image Management Utility</h2>
</div>
</center>
<br>
<br>
<br>
<form name="form2" action="images" method="post" onsubmit="return checkImage()">
<table width="800" align="center">
<tr>
<td>Please select an image file (maximum size 1MB)</td>
</tr>
<tr>
<td><input type="file" name="path" id="loadImage" /></td>
<td align="right"><input type="submit" name="submit"
value="submit" onclick="return checkSize()" /></td>
</tr>
</table>
</form>
</body>
</html>