Implementation of limiting the number of uploadify uploads in js

This article will share with you how to limit the number of uploads when using uploadify to upload files or images. It is very simple, convenient and practical. Friends in need can refer to it.

Simple implementation of limiting the number of uploadify uploads

function deleteUrl(){
   $("body").on("click",".img-wrap .mask span",function(event){
    event.stopPropagation();
          
    var qs=$('#file_upload-queue>p');//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，会自动重置队列数量和删除dom对象，不能直接qs.eq(2).remove()，无效
      
    /*
    if(!window.confirm("您确定删除附件？")){
      return;
    }
    var imgUrl=$(this).parents(".img-wrap").find("img").attr("src");
    deleteImage(imgUrl);
    $(this).parents(".img-wrap").remove();
    */
  });
};

##

<li class="blockli clearfix" style="padding-bottom: 5px;">
  <span class="left-name"><em class="red-star">*</em>拖机授权委托书：</span>
  <p class="upload-wrap" style="width:100px;">
    <input type="file" name="uploadTowedAccredit" id="uploadTowedAccredit" class="filetext"/>
  </p>
  <span id="uploadTowedAccreditLinkTip" class="warn-tips"><em></em>请上传附件，最多上传${towedAccreditPicMax} 张</span>
  <p id="towedAccreditp" class="up-img-list clearfix"></p>
</li>

// 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() {
 
    },
     
    //取消上传
    'onCancel' : function(file) {
    },
    'onCheck': function(event,data,key) {
    },
    //开始上传
    'onUploadStart' : function(file) {
      $('.uploadify-queue').html('');
    },
     
    //上传过程中
    'onUploadProgress' : function(file, bytesUploaded, bytesTotal, totalBytesUploaded, totalBytesTotal) {
      $('.uploadify-queue').html('');
      $("#uploadTowedAccreditLinkTip").html(&#39;<em></em>上传中...&#39;);
    },
     
    //上传完成
    &#39;onUploadComplete&#39; : function(file) {
        $(&#39;.uploadify-queue&#39;).html(&#39;&#39;);
        $("#uploadTowedAccreditLinkTip").html(&#39;<em></em>上传成功，待提交&#39;);
    },
     
    //上传成功
    &#39;onUploadSuccess&#39; : function(file, data, response) {
      var obj = eval(&#39;(&#39; + data + &#39;)&#39;);
        var result=obj.result;
        if(result=="true"){
          var filename=obj.filename;
          $(&#39;.uploadify-queue&#39;).html(&#39;&#39;);
          $(&#39;#towedAccreditp&#39;).append("<p class=&#39;img-wrap&#39;><img width=&#39;112&#39; height=&#39;84&#39; alt=&#39;&#39; src=&#39;"+filename+"&#39;><p class=&#39;mask&#39;><em></em><span></span></p></p>");
        }
    },
     
    //上传失败 //附件格式不正确，请上传JPG、BMP、PNG格式文件，大小不超过3MB
    &#39;onUploadError&#39; : function(file, errorCode, errorMsg, errorString) {
      switch(errorCode) {
        case -100:
          alert("上传的文件数量已经超出系统限制的"+$(&#39;#uploadTowedAccredit&#39;).uploadify(&#39;settings&#39;,&#39;queueSizeLimit&#39;)+"个文件！");
          break;
        case -110:
          alert("文件 ["+file.name+"] 大小超出系统限制的"+$(&#39;#uploadTowedAccredit&#39;).uploadify(&#39;settings&#39;,&#39;fileSizeLimit&#39;)+"大小！");
          break;
        case -120:
          alert("文件 ["+file.name+"] 大小异常！");
          break;
        case -130:
          alert("文件 ["+file.name+"] 类型不正确！");
          break;
      }
    },
    //上传失败 //附件格式不正确，请上传JPG、BMP、PNG格式文件，大小不超过3MB
    &#39;onSelectError&#39; : function(file, errorCode, errorMsg) { 
      var msgText = "上传失败\n"; 
      switch (errorCode) { 
        case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED: 
          var towedAccreditpLen = $("#towedAccreditp").children().length;
          msgText += "每次最多上传 " + $(&#39;#uploadTowedAccredit&#39;).uploadify(&#39;settings&#39;,&#39;uploadLimit&#39;) + "个文件"; 
          break; 
        case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT: 
          msgText += "文件大小超过限制( " + $(&#39;#uploadTowedAccredit&#39;).uploadify(&#39;settings&#39;,&#39;fileSizeLimit&#39;) + " )"; 
          break; 
        case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE: 
          msgText += "文件大小为0"; 
          break; 
        case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE: 
          msgText += "文件格式不正确，仅限 " + $(&#39;#uploadTowedAccredit&#39;).uploadify(&#39;settings&#39;,&#39;fileTypeExts&#39;); 
          break; 
        default: 
          msgText += "错误代码：" + errorCode + "\n" + errorMsg; 
      }
      alert(msgText);
    }
  });
   
  //判断用户是否有安装flash
 var obj = $("#uploadTowedAccredit").children().eq(0);
 if(obj.attr(&#39;type&#39;)!= "application/x-shockwave-flash"){
    alert(&#39;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&#39;);
    return;
  }
   
  $("#uploadTowedAccredit").css("float","left");
};

In addition, I attach jquery uploadify multi-file upload for everyone

<html xmlns=”http://www.w3.org/1999/xhtml”>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=UTF-8″ />
<title>php jquery uploadify多文件上传</title>
<link href=”css/default.css” rel=”stylesheet” type=”text/css” />
<link href=”css/uploadify.css” rel=”stylesheet” type=”text/css” />
<script type=”text/javascript” src=”js/jquery-1.3.2.min.js”></script>
<script type=”text/javascript” src=”js/swfobject.js”></script>
<script type=”text/javascript” src=”js/jquery.uploadify.v2.1.0.min.js”></script>
<script type=”text/javascript”>
$(document).ready(function() {
$(“#fileInput2″).uploadify({
‘uploader&#39;: ‘js/uploadify.swf&#39;,//所需要的flash文件
‘cancelImg&#39;: ‘cancel.png&#39;,//单个取消上传的图片
&#39;script&#39;: ‘js/uploadify.php&#39;,//实现上传的程序
‘folder&#39;: ‘uploads&#39;,//服务端的上传目录
//&#39;auto&#39;: true,//自动上传
‘multi&#39;: true,//是否多文件上传
//&#39;checkScript&#39;: ‘js/check.php&#39;,//验证 ，服务端的
‘displayData&#39;: &#39;speed&#39;,//进度条的显示方式
//&#39;fileDesc&#39;: ‘Image(*.jpg;*.gif;*.png)&#39;,//对话框的文件类型描述
//&#39;fileExt&#39;: ‘*.jpg;*.jpeg;*.gif;*.png&#39;,//可上传的文件类型
//&#39;sizeLimit&#39;: 999999 ,//限制上传文件的大小
//&#39;simUploadLimit&#39; :3, //并发上传数据
//&#39;queueSizeLimit&#39; :5, //可上传的文件个数
//&#39;buttonText&#39; :&#39;文件上传&#39;,//通过文字替换钮扣上的文字
‘buttonImg&#39;: ‘css/images/browseBtn.png&#39;,//替换上传钮扣
‘width&#39;: 80,//buttonImg的大小
‘height&#39;: 24,//
‘rollover&#39;: true,//button是否变换
onComplete: function (evt, queueID, fileObj, response, data) {
//alert(“Successfully uploaded: “+fileObj.filePath);
//alert(response);
getResult(response);//获得上传的文件路径
}
//onError: function(errorObj) {
// alert(errorObj.info+” “+errorObj.type);
//}
});
});
</script>
<script type=”text/javascript”>
function getResult(content){
//通过上传的图片来动态生成text来保存路径
var board = document.getElementById(“pTxt”);
board.style.display=””;
var newInput = document.createElement(“input”);
newInput.type = “text”;
newInput.size = “45″;
newInput.name=”myFilePath[]“;
var obj = board.appendChild(newInput);
var br= document.createElement(“br”);
board.appendChild(br);
obj.value=content;
}
</script>
</head>
<body>
<fieldset style=”border: 1px solid #CDCDCD; padding: 8px; padding-bottom:0px; margin: 8px 0″>
<legend> <strong> 多文件上传</strong></legend>
<p>
<input id=”fileInput2″ name=”fileInput2″ type=”file” />
<input type=”button” value=”确定上传” onclick=”javascript:$(‘#fileInput2′).uploadifyUpload();”>  
||  <a href=”javascript:$(‘#fileInput2′).uploadifyClearQueue();”>清除上传列表</a></p>
<p></p>
</fieldset>
<FORM name=”form2″ METHOD=POST ACTION=”db.php”>
 <p id=”pTxt” style=”display:none”><span style=”color:red”><strong>已经上传的图片有：</strong></span& gt;<br></p><br>
<INPUT TYPE=”submit” value=”提 交”>
</FORM>
</body>
</html>

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