本文实例为大家分享了jquery实现动态添加附件的具体代码，供大家参考，具体内容如下
创建HTML页面
项目中实现的原代码，无删减直接贴上。具体请参考“添加附件”按钮相关操作。
注意引入：cardRansomManage.js，ajaxfileupload.js.
<!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><#include "../ftl/includes/easyui.ftl"/><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>账户管理-预付卡赎回管理</title></head><body class="easyui-layout" fit="true"> <div class="w_960 mg_auto"> <div class="over_f_h"> <div class="mg_t_10 font_13"> 当前位置：预付费卡综合管理系统 > 预付卡赎回管理 > <a class="color_000 hover_nav_link" href="${rc.contextPath}/ransom/apply" rel="external nofollow" >赎回申请</a> > </div> <form id="editForm" method="post" enctype="multipart/form-data"> <input type="hidden" name="isLoginUser" id="isLoginUser" value=${isLoginUser?string} /> <input type="hidden" name="orderStatus" id="orderStatus" value='${order.orderStatus!}' /> <div class="mg_t_10 bd_ccc pd_b_20"> <div class="h_30 bg_fff4c8 font_w_bold font_13 line_2p4em pd_l_10 bd_b_ccc">赎回申请</div> <div id="toolbar" class="datagrid-toolbar" style="height: auto;"> <a id="btnAddfile" class="easyui-linkbutton" iconCls="icon-add" plain="true" onclick="javascript:addFile();">增加附件</a> <a id="btnSave" class="easyui-linkbutton" iconCls="icon-save" plain="true" onclick="javascript:saveFile();">上传附件并保存</a> <@verifyRes res="/ransom/ransomInvalid?Apply"> <a id="btnSubmit" class="easyui-linkbutton" iconCls="icon-ok" plain="true" onclick="javascript:submitApply();">申 请</a> </@verifyRes> <@verifyRes res="/ransom/ransomInvalid?Audit"> <a id="btnAudit" class="easyui-linkbutton" iconCls="icon-ok" plain="true" onclick="javascript:submitAudit();">审 核</a> <a id="btnRefuse" class="easyui-linkbutton" iconCls="icon-ok" plain="true" onclick="javascript:submitRefuse();">驳 回</a> </@verifyRes> <div class="clear"></div> </div> <div> <div class="mg_auto mg_t_30 pd_l_30"> <div class="f_l w_350"> <div class="f_l mg_t_2 w_120 a_r val_input">赎回单号：</div> <input type="text" name="orderNo" id="orderNo" value='${order.orderNo!}' disabled="disabled" class="f_l show h_20 line_1p7em w_150 required"/> <div class="clear"></div> </div> <div class="clear"></div> </div> <div class="mg_auto mg_t_10 pd_l_30"> <div class="f_l w_350"> <div class="f_l mg_t_2 w_120 a_r val_input">申请人：</div> <input type="text" name="createName" id="createName" value='${order.createName}' disabled="disabled" class="f_l show h_20 line_1p7em w_150 required"/> <div class="clear"></div> </div> <div class="clear"></div> </div> <div class="mg_auto mg_t_10 pd_l_30"> <div class="f_l w_350"> <div class="f_l mg_t_2 w_120 a_r val_input">表单状态：</div> <select class="f_l show h_20 line_1p7em required w_150" id="orderStatus" name="orderStatus" disabled="disabled"> <option class="h_20" value="" >--全部--</option> <#if ransomStatus??> <#list ransomStatus as es> <option value='${es.value!}' <#if order.orderStatus?exists><#if order.orderStatus==es.value> selected="selected"</#if></#if>>${es.chName!""}</option> </#list> </#if> </select> <div class="clear"></div> </div> <div class="clear"></div> </div> <div id="freshdiv"></div> <div class="mdiv" id="mdiv"> <#if order.attachment??> <#list order.attachment as attach> <div class="mg_auto mg_t_10 pd_l_30" style="disabled:true"> <div class="f_l w_600"> <div class="f_l mg_t_2 w_120 a_r val_input">附件(已上传)：</div> <input type="text" name="attach" value="${attach.attachmentPath}" disabled="disabled" class="f_l show h_20 line_1p7em w_150 required"/> <a href="#" rel="external nofollow" rel="external nofollow" name="rmlinkattach" onclick="rmlinkAttach('${attach.attachmentId}',this)" style="color:red">删除</a> <a href="javascript:void(0)" rel="external nofollow" onclick="downLoadFile('${attach.attachmentId}')">下载</a> <div class="clear"></div> </div> <div class="clear"></div> </div> </#list> </#if> </div> </div> </div> </form> </div> </div> <div id="fileTemplate" style="display:none"> <div class="mg_auto mg_t_10 pd_l_30"> <div class="f_l w_600"> <div class="f_l mg_t_2 w_120 a_r val_input">附件：</div> <input type="file" name="uploadfiles0" class="f_l show h_20 line_1p7em w_220 required" /> <a href="#" rel="external nofollow" rel="external nofollow" name="rmlink0" style="color:red">删除 </a> <div class="clear"></div> </div> <div class="clear"></div> </div> </div> <form action="" id="downloadform" method="post"> <input type="hidden" name="attachmentId" id="attachmentId"/> </form> <div id="loading" class="pos_ab pd_b_30 font_15 font_msyh bd_2_4979e8 bd_radius_5 bg_fff color_333333 z_index_600 hide" > <div class="f_c show w_50 h_50 vlbc_customerAdd mg_l_120 mg_r_120 mg_t_24"></div> <div class="mg_t_24 mg_l_60 mg_r_60">正在处理，请稍后...</div> </div> <script type="text/javascript" charset="utf-8" src="${rc.contextPath}/js/ransom/cardRansomManage.js"></script> <script type="text/javascript" charset="utf-8" src="${rc.contextPath}/js/card/ajaxfileupload.js"></script></body></html>创建Javascript库
cardRansomManage.js
//设置面罩的z-index,打开进度条function setPopupZ_index() { $("#popupDiv_bgDiv_1").css("z-index", "550"); bcd_openPopUpDailog(300, 'loading'); //进度条}/** * 编辑、查看、提交页面 资源控制*/var $fileMixSize = 10; //允许上传附件数var $fileCurSize = 0; //已上传并保存附件数var $fileSize = 0; //当前新增附件操作次数var $delFiles =""; //记录 删除已保存附件var $flag = 0; //数据校验 0:附件无效; 1:无附件提交; 2:附件有效$(document).ready(function(){ $fileCurSize = $("input[name='attach']").size(); initialResource(); bindListener();});function initialResource(){ var orderStatus = $("#orderStatus").val(); var isLoginUser = $("#isLoginUser").val(); var btnSubmit = $("#btnSubmit"); var btnAudit = $("#btnAudit"); var btnRefuse = $("#btnRefuse"); if(isLoginUser=="true"){ if(orderStatus==0||orderStatus==3){//草稿、驳回状态// addFile(); if(btnAudit != undefined){ btnAudit.hide(); } if(btnRefuse != undefined){ btnRefuse.hide(); } }else {//orderStatus:1(申请),2(审核) $("a[name='rmlinkattach']").remove(); $("#toolbar").remove(); } }else{ if(orderStatus!=1){ $("#toolbar").remove(); $("a[name='rmlinkattach']").remove(); }else{ $("#btnSave").hide(); $("a[name='rmlinkattach']").hide(); if(btnSubmit != undefined){ btnSubmit.hide(); } } }}function doCloseFunction(){ window.location.href="query?orderDetail&orderNo=" rel="external nofollow" ;}function addFile(){ $fileSize = $("[name='uploadfiles']").size(); if($fileSize < $fileMixSize - $fileCurSize){ var $fileTemple=$("#fileTemplate >div").clone(); var tid = "uploadfiles0"+new Date().getTime(); $fileTemple.find(":file").attr("id",tid); $fileTemple.find(":file").attr("name","uploadfiles"); $fileTemple.find("a").attr("name","rmlink"); $("#mdiv").append($fileTemple); bindListener(); $fileSize++; }else{ alertDiv.create("alertDiv","最大上传文件数为："+$fileMixSize+"."); }}function saveFile(){ operSubmit("0"); $delFiles = "";} function submitApply(){ operSubmit("1"); $delFiles ="";}function submitAudit(){ var orderStatus = $("#orderStatus").val(); //审核人：只允许处理审核状态的赎回单 if(orderStatus==1){ $.messager.confirm('请确认', '您要批准此赎回申请单？', function(r) { if(r){ operSubmit("2"); //审批通过 } }); $delFiles =""; }else{ alertDiv.create("alertDiv","赎回单当前状态，不允许提交！"); }}function submitRefuse(){ var orderStatus = $("#orderStatus").val(); //审核人：只允许处理审核状态的赎回单 if(orderStatus==1){ $.messager.confirm('请确认', '您要驳回此赎回申请单？', function(r) { if(r){ operSubmit("3"); //驳回 } }); }else{ alertDiv.create("alertDiv","赎回单当前状态，不允许提交！"); }}function downLoadFile(attachmentId){ $('#attachmentId').val(attachmentId); $('#downloadform').attr('action', 'downLoad'); $("#downloadform").submit();}function bindListener(){ $("a[name=rmlink]").unbind().click(function(){ $(this).parent().parent().remove(); $fileSize--; })}function rmlinkAttach(attach, obj){ $.messager.confirm('请确认', '您要删除当前所选项目？', function(r) { if(r){ $delFiles += ""+attach +","; $fileCurSize -=1; $(obj).parent().parent().remove(); } });}//处理查询返回的信息function callBack(order) { var html = ""; var orderStatus = order.orderStatus; //var orderStatus = record['record'].orderStatus; $("#orderStatus").val(orderStatus); $("#mdiv").empty();//清空以前的数据 $("#freshdiv").empty(); $(order.attachment).each( function(i, attach) { html += "<div class='mg_auto mg_t_10 pd_l_30' style='disabled:true'>"; html += " <div class='f_l w_600'>"; html += " <div class='f_l mg_t_2 w_120 a_r val_input'>附件(已上传)：</div>"; html += " <input type='text' name='attach' value=" + attach.attachmentPath + " disabled='disabled' class='f_l show h_20 line_1p7em w_150 required'/> "; if(orderStatus==0||orderStatus==3){ html += " <a href='#' name='rmlinkattach' onclick='rmlinkAttach(" + attach.attachmentId + ",this)' style='color:red'>删除</a>"; } html += " <a href='javascript:void(0)' onclick='downLoadFile(" + attach.attachmentId + ")'>下载</a>"; html += " <div class='clear'></div>"; html += " </div>"; html += " <div class='clear'></div>"; html += "</div>"; }); var $container = $("#freshdiv"); $container.append(html);//追加新的数据}function refreshRes(order,orderStatusName){ $("#orderNo").val(order.orderNo); $("#orderStatus").val(order.orderStatus); $("#orderStatus option[value='"+order.orderStatus+"']").attr("selected","selected"); initialResource(); //$.post("query?Detail",order,callBack, "json"); callBack(order) $fileCurSize = $("input[name='attach']").size();}function operSubmit(status){ validateUploadfiles(); if($flag==2){ var order = { orderNo: $("#orderNo").val(), orderStatus: status, attachments: $delFiles }; fileupload("save",order,"query?orderDetail&orderNo="); }else if($flag==1){ var order = { orderNo: $("#orderNo").val(), orderStatus: status, attachments: $delFiles }; $.post("save?unUpload", order, function(data){ if (data.success) { refreshRes(data['order']); alertDiv.create("alertDiv", data.obj); } else { alertDiv.create("alertDiv", data.obj); } }, "json"); }else{ alertDiv.create("alertDiv","附件不能为空，请添加有效附件！"); }}function validateUploadfiles(){ var files = $("input[name='uploadfiles']"); if(files.size()>0){ $.each(files,function(i, file){ if(file.value==undefined || file.value==""){ alertDiv.create("alertDiv","新增附件不能为空，请上传！"); $flag = 0; }else{ $flag = 2; } }); }else{ $flag=1; }}function fileupload(url,order,successUrl){ var files = $("input[name='uploadfiles']"); var uploadfiles = []; $.each(files,function(i, file){ if(file.value!=undefined || file.value!=""){ uploadfiles.push(files[i].id) } }); $.ajaxFileUpload({ url: url, secureuri : false, type: 'post', dataType: "json", fileElementId: uploadfiles, data: order, beforeSend: function() { setPopupZ_index(); }, success: function(result) { if (result.success) { refreshRes(result['order']); alertDiv.create("alertDiv", result.obj); } else { alertDiv.create("alertDiv", result.obj); } }, error: function(result) { alertDiv.create("alertDiv", "赎回申请信息出错，请稍后重试！"); }, complete: function() { //$("#btnsave").removeAttr("disabled"); } });}ajaxfileupload.js
jQuery.extend({ handleError: function( s, xhr, status, e ) { // If a local callback was specified, fire it if ( s.error ) { s.error.call( s.context || s, xhr, status, e ); } // Fire the global callback if ( s.global ) { (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] ); } }, createUploadIframe: function(id, uri) { //create frame var frameId = 'jUploadFrame' + id; var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"'; if(window.ActiveXObject) { if(typeof uri== 'boolean'){ iframeHtml += ' src="' + 'javascript:false' + '"'; } else if(typeof uri== 'string'){ iframeHtml += ' src="' + uri + '"'; } } iframeHtml += ' />'; jQuery(iframeHtml).appendTo(document.body); return jQuery('#' + frameId).get(0); }, createUploadForm: function(id, fileElementId, data) { //create form var formId = 'jUploadForm' + id; var fileId = 'jUploadFile' + id; var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>'); if(data) { for(var i in data) { jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); } } if(typeof(fileElementId) == 'string'){ fileElementId = [fileElementId]; } for (var i = 0; i < fileElementId.length; i ++) { var oldElement = jQuery('#' + fileElementId[i]); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id', fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); }// var oldElement = jQuery('#' + fileElementId);// var newElement = jQuery(oldElement).clone();// jQuery(oldElement).attr('id', fileId);// jQuery(oldElement).before(newElement);// jQuery(oldElement).appendTo(form); //set attributes jQuery(form).css('position', 'absolute'); jQuery(form).css('top', '-1200px'); jQuery(form).css('left', '-1200px'); jQuery(form).appendTo('body'); return form; }, ajaxFileUpload: function(s) { // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout s = jQuery.extend({}, jQuery.ajaxSettings, s); var id = new Date().getTime() var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data)); var io = jQuery.createUploadIframe(id, s.secureuri); var frameId = 'jUploadFrame' + id; var formId = 'jUploadForm' + id; // Watch for a new set of requests if ( s.global && ! jQuery.active++ ) { jQuery.event.trigger( "ajaxStart" ); } var requestDone = false; // Create the request object var xml = {} if ( s.global ) jQuery.event.trigger("ajaxSend", [xml, s]); // Wait for a response to come back var uploadCallback = function(isTimeout) { var io = document.getElementById(frameId); try { if(io.contentWindow) { xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null; xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document; }else if(io.contentDocument) { xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null; xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document; } }catch(e) { jQuery.handleError(s, xml, null, e); } if ( xml || isTimeout == "timeout") { requestDone = true; var status; try { status = isTimeout != "timeout" ? "success" : "error"; // Make sure that the request was successful or notmodified if ( status != "error" ) { // process the data (runs the xml through httpData regardless of callback) var data = jQuery.uploadHttpData( xml, s.dataType ); // If a local callback was specified, fire it and pass it the data if ( s.success ) s.success( data, status ); // Fire the global callback if( s.global ) jQuery.event.trigger( "ajaxSuccess", [xml, s] ); } else jQuery.handleError(s, xml, status); } catch(e) { status = "error"; jQuery.handleError(s, xml, status, e); } // The request was completed if( s.global ) jQuery.event.trigger( "ajaxComplete", [xml, s] ); // Handle the global AJAX counter if ( s.global && ! --jQuery.active ) jQuery.event.trigger( "ajaxStop" ); // Process result if ( s.complete ) s.complete(xml, status); jQuery(io).unbind() setTimeout(function() { try { jQuery(io).remove(); jQuery(form).remove(); } catch(e) { jQuery.handleError(s, xml, null, e); } }, 100) xml = null } } // Timeout checker if ( s.timeout > 0 ) { setTimeout(function(){ // Check to see if the request is still happening if( !requestDone ) uploadCallback( "timeout" ); }, s.timeout); } try { var form = jQuery('#' + formId); jQuery(form).attr('action', s.url); jQuery(form).attr('method', 'POST'); jQuery(form).attr('target', frameId); if(form.encoding) { jQuery(form).attr('encoding', 'multipart/form-data'); } else { jQuery(form).attr('enctype', 'multipart/form-data'); } jQuery(form).submit(); } catch(e) { jQuery.handleError(s, xml, null, e); } jQuery('#' + frameId).load(uploadCallback ); return {abort: function () {}}; }, uploadHttpData: function( r, type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script", eval it in global context if ( type == "script" ) jQuery.globalEval( data ); // Get the JavaScript object, if JSON is used. if ( type == "json" ) data = r.responseText; var start = data.indexOf(">"); if(start != -1) { var end = data.indexOf("<", start + 1); if(end != -1) { data = data.substring(start + 1, end); } } eval( "data = " + data ); // evaluate scripts within html if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); return data; }})以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持武林网。
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