<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<form action="后端接口" enctype="multipart/form-data" method="post" id="attachment_uploads">
<div class="attachs fl">
<div class="t_fjfont">附件:</div>
<div class="upload_btns"><input type="file" name="file" id="file" οnchange="fileChange(this);" /> </div>
</div>
<div class="attachs fl">
<div class="t_fjfont" style="color:red;font-size:12px;font-weight:bold">文件上限2MB</d
</div>
<div class="attachs fl">
<div class="upload_btns"><input type="file" name="files" id="file_fujian" οnchange="filefujianChange(this);" /> <input type="hidden" name="rev" class="hide_rev" /></div>
</div>
</form>
<script>
var isIE = /msie/i.test(navigator.userAgent) && !window.opera;
function fileChange(target) {
var fileSize = 0;
if (isIE && !target.files) {
var filePath = target.value;
var fileSystem = new ActiveXObject("Scripting.FileSystemObject");
var file = fileSystem.GetFile (filePath);
fileSize = file.Size;
} else {
fileSize = target.files[0].size;
}
var size = fileSize / 1024;
if(size>2000){
alert("附件不能大于2M");
target.value="";
return
}
var name=target.value;
var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();
if(fileName !="xls" && fileName !="xlsx"){
alert("请选择execl格式文件上传！");
target.value="";
return
}
}
function filefujianChange(target) {
var fileSize = 0;
if (isIE && !target.files) {
var filePath = target.value;
var fileSystem = new ActiveXObject("Scripting.FileSystemObject");
var file = fileSystem.GetFile (filePath);
fileSize = file.Size;
} else {
fileSize = target.files[0].size;
}
var size = fileSize / 1024;
if(size>2000){
alert("附件不能大于2M");
target.value="";
return
}
var name=target.value;
var fileName = name.substring(name.lastIndexOf(".")+1).toLowerCase();
if(fileName !="jpg" && fileName !="jpeg" && fileName !="pdf" && fileName !="png" && fileName !="dwg" && fileName !="gif" ){
alert("请选择图片格式文件上传(jpg,png,gif,dwg,pdf,gif等)！");
target.value="";
return
}
}
</script>
</body>
</html>
另：
<script language=javascript>
function check()
{
photoStr=document.all("Photo.Pho_file").value;
photoEx=photoStr.substring(photoStr.lastIndexOf("."));
if(photoEx==".gif" || photoEx==".jpg"){
form1.submit();
}else{
alert("上传文件只能是[.gif]或[.jpg]的！");
return;
}
}
</script>