javascrpt多文件上传文件

<HTML>
<HEAD><TITLE>上传文件</TITLE>
<SCRIPT language=javascript type=text/javascript>
<!--
var RES_BT_DELETE = "删除";
var isIE = (navigator.userAgent.indexOf("MSIE") != -1);
var fileIndex = 0;function addFile() {
 var spanId = "filespan";
 var fileId = "uploadfile" + (fileIndex++);
 addInputFile(spanId, fileId);
}function addInputFile(spanId, fileId) {
 var span = document.getElementById(spanId);
 if (span != null) {
 var divObj = document.createElement("div"), fileObj, delObj;
 divObj.id = fileId;
 if (isIE) {
 fileObj = document.createElement("<input type=file onchange=changeFile(form)>");
 delObj = document.createElement("<input type=button onclick=delInputFile('" + spanId + "','" + fileId + "')>");
 } else {
 fileObj = document.createElement("input");
 fileObj.type = "file";
 fileObj.setAttribute("onchange", "changeFile(form)", 0);
 delObj = document.createElement("input");
 delObj.type = "button";
 delObj.setAttribute("onclick", "delInputFile('" + spanId + "','" + fileId + "')", 0);
 }
 fileObj.name = fileId;
 fileObj.size = "40";
 fileObj.className = "input";
 delObj.value = RES_BT_DELETE;
 divObj.appendChild(fileObj);
 divObj.appendChild(document.createTextNode(" "));
 divObj.appendChild(delObj);
 span.appendChild(divObj);
 }
}function delInputFile(spanId, fileId) {
 var span = document.getElementById(spanId);
 var divObj = document.getElementById(fileId);
 if (span != null && divObj != null) {
 span.removeChild(divObj);
 }
}
//-->
</SCRIPT>
<META content="MSHTML 6.00.2800.1528" name=GENERATOR>
</HEAD>
<BODY class=pagebackground>
<FORM id=form action=XXX method=post encType=multipart/form-data>
<TABLE class=dialog1 height=20 cellSpacing=1 cellPadding=8 width="90%" align=center>
 <TBODY>
 <TR>
 <TD noWrap>通过文件上传: </TD>
 <TD id=filespan noWrap>
 <INPUT class=input type=file size=40 name=file>
 <INPUT id=btnAdd onclick=addFile() type=button value=添加>
 </TD>
 </TR>
 </TBODY>
</TABLE>
</FORM>
</BODY></HTML>
原文地址:https://www.cnblogs.com/winner/p/340157.html