求助一个js上传文件的怎么写？
求助一个js上传文件的怎么写？
[解决办法]
- HTML code
js 用户自定义多文件上传代码<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>批量上传</title><script type="text/javascript">var attachname = "attach";var i=1;function addInput(){if(i<10){var attach = attachname + i ;if(createInput(attach))i=i+1;}} function deleteInput(){if(i>1){i=i-1;if(!removeInput())i=i+1;}} function createInput(nm){ var aElement=document.createElement("div"); var html = "附件（"+i+"）<input type="file" id="FileUpload" + i + "" name="FileUpload" + i + "" title="选择图片" size="45" onchange="javascript:showphoto();"><br />" + "<img alt="js 用户自定义多文件上传代码" width="0" id="Image" + i + "" name="Image" + i + "" src="" title="图片预览" style="margin-left: 55px;" >";aElement.innerHTML=html;//aElement.value="thanks"; //aElement.onclick=Function("asdf()"); if(document.getElementById("upload").appendChild(aElement) == null)return false;return true;} function removeInput(nm){var aElement = document.getElementById("upload");if(aElement.removeChild(aElement.lastChild) == null)return false;return true; }function showphoto(){ var re=/.(jpg|jpeg|JPG|JPEG)$/; var x=document.getElementById('upload').getElementsByTagName('input'); for(r=0;r<x.length;r++){ if ((!re.test(document.getElementById("FileUpload"+[r+1]).value)) & (document.getElementById("FileUpload"+[r+1]).value!="")) { alert("只允许上传jpg文件！"); document.getElementById("FileUpload"+[r+1]).outerHTML=document.getElementById("FileUpload"+[r+1]).outerHTML.replace(/value=w/g,''); document.getElementById("Image"+[r+1]).style.width="0px"; document.getElementById("Image"+[r+1]).src=""; }else if (document.getElementById("FileUpload"+[r+1]).value!="") { document.getElementById("Image"+[r+1]).style.width="100px"; document.getElementById("Image"+[r+1]).src=document.getElementById("FileUpload"+[r+1]).value; }}}function newInput(){ var x=document.getElementById('upload').getElementsByTagName('img'); for(r=0;r<9;r++){ addInput(); x[r].width="100"; x[r].src=document.getElementById("smPicture").value.replace("sm","sm"+[r+1]); //x[r].onerror=function(){deleteInput()}; }}</script><script type="text/javascript">onload=function(){newInput();}</script></head><body><input type="button" name="button" value="添加附件" onclick="addInput()"><input type="button" name="button" value="删除附件" onclick="deleteInput()"><span id="upload"></span><input name="smPicture" type="hidden" id="smPicture" value='http://222.70.206.26/img/5/5000011_sm.jpg'></body></html>
[解决办法]
通过 form 标签,或者 flash
[解决办法]
网上很多的，很容易的，根据你用的服务器端语言下个相应的版本就行了的
------解决方案--------------------
可以参考这个文件上传系统
[解决办法]
楼主我的不可以吗？