本文为大家分享了javascript实现uploadify上传格式以及个数限制的关键代码，希望大家好好研究学习。
关键代码一：
var qs=$('#file_upload-queue>div');//所有的队列
var id=qs.eq(2).attr('id');//得到第三个队列的id
$('#uploadTowedAccredit').uploadify('cancel',id);//这样就行了，会<a href="https://www.jb51.cc/tag/zidong/" target="_blank" class="keywords">自动</a>重置队列<a href="https://www.jb51.cc/tag/shuliang/" target="_blank" class="keywords">数量</a>和<a href="https://www.jb51.cc/tag/shanchu/" target="_blank" class="keywords">删除</a>dom对象，不能直接qs.eq(2).remove()，无效
/*
if(!window.confirm("您确定<a href="https://www.jb51.cc/tag/shanchu/" target="_blank" class="keywords">删除</a>附件？")){
return;
}
var <a href="https://www.jb51.cc/tag/imgur/" target="_blank" class="keywords">imgur</a>l=$(this).parents(".img-wrap").find("img").attr("src");
deleteImage(<a href="https://www.jb51.cc/tag/imgur/" target="_blank" class="keywords">imgur</a>l);
$(this).parents(".img-wrap").remove();
*/
});
};
关键代码二：
rush:xhtml;">
ottom: 5px;">
拖机授权委托书：
请上传附件，最多上传${towedAccreditPicMax} 张
关键代码三：
rush:js;">
// 上传拖机授权委托书
function uploadTowedAccreditinit(){
$("#uploadTowedAccredit").uploadify({
'hideButton':'true','preventCaching' : 'true','checkExisting':'true','swf': SWF,'uploader':uploadImg,'debug':false,'multi': true,'method': 'post','preventCaching' : true,'removeCompleted' : true,'removeTimeout' : 10,'requeueErrors' : true,'successtimeout' : 30,'uploadLimit' : ${towedAccreditPicMax},'fileObjName' : 'Filedata',//单张图片最大限制
'fileSizeLimit' : '1024KB','fileTypeDesc' : 'Image Files',//仅限上传jpg格式图片
'fileTypeExts' : '*.jpg;*.png','height': 24,'width':73,'buttonText' : '上传附件','auto': true,'buttonClass':'uploada btn-fff-24','onSWFReady' : function() {
},'onInit':function(){
// $("#file_upload-button").css("width","100");
},//选择图片完成
'onSelect' : function() {
},//取消<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>
'onCancel' : function(file) {
},'onCheck': function(event,data,key) {
},//开始<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>
'onUploadStart' : function(file) {
$('.uploadify-queue').html('');
},//<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>过程中
'onUploadProgress' : function(file,byte<a href="https://www.jb51.cc/tag/supl/" target="_blank" class="keywords">supl</a>oaded,bytesTotal,totalByte<a href="https://www.jb51.cc/tag/supl/" target="_blank" class="keywords">supl</a>oaded,totalBytesTotal) {
$('.uploadify-queue').html('');
$("#uploadTowedAccreditLinkTip").html('<em></em><a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>中...');
},//<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>完成
'onUploadComplete' : function(file) {
$('.uploadify-queue').html('');
$("#uploadTowedAccreditLinkTip").html('<em></em><a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>成功，待提交');
},//<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>成功
'onUploadSuccess' : function(file,response) {
var obj = eval('(' + data + ')');
var result=obj.result;
if(result=="true"){
var filename=obj.filename;
$('.uploadify-queue').html('');
$('#towedAccreditDiv').append("<div class='img-wrap'><img width='112' height='84' alt='' src='"+filename+"'><div class='mask'><em></em><span></span></div></div>");
}
},//<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>失败 //附件格式不正确，请<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>JPG、BMP、PNG格式<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>，大小不超过3MB
'onUploadError' : function(file,errorCode,errorMsg,errorString) {
switch(errorCode) {
case -100:
alert("<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>的<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a><a href="https://www.jb51.cc/tag/shuliang/" target="_blank" class="keywords">数量</a>已经超出系统限制的"+$('#uploadTowedAccredit').uploadify('settings','queueSizeLimit')+"个<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>！");
break;
case -110:
alert("<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a> ["+file.name+"] 大小超出系统限制的"+$('#uploadTowedAccredit').uploadify('settings','fileSizeLimit')+"大小！");
break;
case -120:
alert("<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a> ["+file.name+"] 大小异常！");
break;
case -130:
alert("<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a> ["+file.name+"] 类型不正确！");
break;
}
},//<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>失败 //附件格式不正确，请<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>JPG、BMP、PNG格式<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>，大小不超过3MB
'onSelectError' : function(file,errorMsg) {
var msgText = "<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a>失败\n";
switch (errorCode) {
case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:
var towedAccreditDivLen = $("#towedAccreditDiv").children().length;
msgText += "每次最多<a href="https://www.jb51.cc/tag/shangchuan/" target="_blank" class="keywords">上传</a> " + $('#uploadTowedAccredit').uploadify('settings','uploadLimit') + "个<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>";
break;
case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:
msgText += "<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>大小超过限制( " + $('#uploadTowedAccredit').uploadify('settings','fileSizeLimit') + " )";
break;
case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:
msgText += "<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>大小为0";
break;
case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:
msgText += "<a href="https://www.jb51.cc/tag/wenjian/" target="_blank" class="keywords">文件</a>格式不正确，仅限 " + $('#uploadTowedAccredit').uploadify('settings','fileTypeExts');
break;
default:
msgText += "<a href="https://www.jb51.cc/tag/cuowu/" target="_blank" class="keywords">错误</a><a href="https://www.jb51.cc/tag/daima/" target="_blank" class="keywords">代码</a>：" + errorCode + "\n" + errorMsg;
}
alert(msgText);
}});
//判断用户是否有安装flash
var obj = $("#uploadTowedAccredit").children().eq(0);
if(obj.attr('type')!= "application/x-shockwave-flash"){
alert('系统检测到您的浏览器没有安装flash插件，为了你能够正常上传图片，建议你安装flash');
return;
}
$("#uploadTowedAccredit").css("float","left");
};
javascript如何限制uploadify上传格式以及个数这个问题希望通过本文大家都应该有了一定的了解，希望可以真正帮助大家解决uploadify上传个数以及格式限制的问题。
