jquery实现动态添加附件功能
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.
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 += "";
});
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 = '