JavaScript 上传文件(psd,压缩包等),图片,视频的实现方法

废话不多说了，直接给大家贴代码了，具体代码如下所示：

// 上传目标触发点
<input type="file" class="upvideo" name="upvideo" id="fileupload1" />
// 引入插件
<script type="text/javascript" src="{$IMG}/bstage/js/jquery.form.js" language="javascript"></script>
/**方法调用**/
setFileUpload({
 name: 'fileupload1',
 backfun: upback1,
 beforefun: checkUp1,
 loadfun:loadup,
 phpUrl: '/ossphp/php/get.php?ft=video'
});
// 上传前验证
function checkUp1(n){
 // 查看视频大小(mb)
 var fileObj = document.getElementById(n).files[0];
 var relSize = parseInt(fileObj.size/1024/1024);
 if(relSize > 10){ // 大于10mb
  alert('提示','视屏超过10MB,请重新上传！');
  return false;
 }
 // 查看视频类型
 var tv_id =document.getElementById(n).value;//根据id得到值
 var index= tv_id.indexOf(".");
 tv_id=tv_id.substring(index).toLowerCase();
 if(tv_id!=".rb"&&tv_id!=".rmvb"&&tv_id!=".mp4"&&tv_id!=".flv"){
  alert("提示","不是指定视频格式,重新选择");
  return false;
 }
 return true;
}
//上传中
function loadup(){
}
// 上传成功后操作
function upback1(data){
 // data 成功后的参数
}
/**上传功能封装**/
function setFileUpload(options){
 var n = options.name;
 var phpUrl = options.phpUrl;
 var backfun = options.backfun;
 var beforefun = options.beforefun;
 var loadfun = options.loadfun;
 var accessid = '';
 var accesskey = '';
 var host = '';
 var policyBase64 = '';
 var signature = '';
 var callbackbody = '';
 var filename = '';
 var dirname = '';
 var expire = 0;
 var upflag = true;
 if(phpUrl==null || phpUrl==''){console.log('phpurl is null');return false;}
 if(n==null || n==''){console.log('object is null');return false;}
 var backfun1 = $.isFunction(backfun) ?
      backfun :
      function(success, error){
       console.log('no backfun');
      };
 var beforefun1 = $.isFunction(beforefun) ?
      beforefun :
      function(success, error){
       return true;
      };
 var loadfun1 = $.isFunction(loadfun) ?
      loadfun :
      function(success, error){
       return true;
      };
 var obj = $('#'+n);
 obj.change(function(){
  if(beforefun1(n)){
   if(n=="fileupload1"){
    fileEmb1(n);
   }else if(n == 'fileupload2'){
    fileEmb2(n);
   }else if(n == 'fileupload3'){
    fileEmb3(n);
   }
  }
 });
 function fileEmb1(n){
  //oss add
  $("#"+n).attr('name','file');
  var file1 = $("#"+n).val();
  var fileName = getFileName(file1);
  phpUrl = phpUrl + '&fname='+fileName;
  get_signature();
  var ldot = fileName.lastIndexOf(".");
  var filetype = fileName.substring(ldot + 1);
  $("#"+n).wrap("<form id='myupload1' action='"+host+"' method='post' enctype='multipart/form-data'></form>");
  $("#myupload1").prepend("<input type='hidden' value='' name='name' id='name'></input><input type='hidden' value='"+dirname+"."+filetype+"' name='key' ></input><input type='hidden' value='"+policyBase64+"' name='policy' id='policy'></input><input type='hidden' value='"+accessid+"' name='OSSAccessKeyId' id='OSSAccessKeyId'></input><input type='hidden' value='200' name='success_action_status' id='success_action_status' ></input><input type='hidden' value='"+callbackbody+"' name='callback' id='callback'></input><input type='hidden' value='"+signature+"' name='signature' id='signature'></input>");
  //speed_width进度条类
  //percent进度数字类
  //load_content上传区域
  $('#myupload1').ajaxSubmit({
   dataType: 'json', //数据格式为json
   data:'',
   beforeSend: function() {
    loadfun1();
    if(!upflag)return false;
    upflag=false;
   },
   uploadProgress: function(event, position, total, percentComplete) {
    $('.upck_b').hide();
    $('.videspeed').show();
    percentComplete = percentComplete>=100?99:percentComplete;
    var percentVal = percentComplete + '%'; //获得进度
    $('.speed_num').css('width',percentVal);
    $('.persent_em').html(percentComplete);
   },
   success: function(data) { //成功
     $('.load_content').html('<em >图片上传</em>');
     //上传成功后还原
     $("#"+n).attr('name','');
     setFileUpload(options);
     upflag=true;
     backfun1(data);
   },
   error:function(xhr){ //上传失败
    $('.load_content').html('<em >图片上传</em>');
    upflag=true;
   }
  });
 }
 function getFileName(path){
  var pos1 = path.lastIndexOf('/');
  var pos2 = path.lastIndexOf('\\');
  var pos = Math.max(pos1, pos2)
  if( pos<0 )
   return path;
  else
   return path.substring(pos+1);
 }
 now = timestamp = Date.parse(new Date()) / 1000;
 new_multipart_params = '';
 function send_request(){
  var xmlhttp = null;
  if (window.XMLHttpRequest)
  {
   xmlhttp=new XMLHttpRequest();
  }
  else if (window.ActiveXObject)
  {
   xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (xmlhttp!=null && phpUrl)
  {
   //phpUrl = '/ossphp/php/get.php?ft=resources';
   xmlhttp.open( "GET", phpUrl, false );
   xmlhttp.send( null );
   return xmlhttp.responseText;
  }
  else
  {
   alert("Your browser does not support XMLHTTP.");
  }
 };
 function get_signature()
 {
  //可以判断当前expire是否超过了当前时间,如果超过了当前时间,就重新取一下.3s 做为缓冲
  now = timestamp = Date.parse(new Date()) / 1000;
  //if (expire < now + 3)
  //{
   body = send_request()
   var obj = eval ("(" + body + ")");
   host = obj['host']
   policyBase64 = obj['policy']
   accessid = obj['accessid']
   signature = obj['signature']
   expire = parseInt(obj['expire'])
   callbackbody = obj['callback']
   dirname = obj['dir']
   return true;
  //}
 };
} 

注:里面的细节还可以继续封装

以上所述是小编给大家介绍的JavaScript 上传文件(psd,压缩包等),图片,视频功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！