您好,登錄后才能下訂單哦!
這篇文章給大家分享的是有關JavaScript如何實現上傳文件,圖片,視頻功能的內容。小編覺得挺實用的,因此分享給大家做個參考,一起跟隨小編過來看看吧。
具體代碼如下所示:
// 上傳目標觸發點 <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> /**方法調用**/ setFileUpload({ name: 'fileupload1', backfun: upback1, beforefun: checkUp1, loadfun:loadup, phpUrl: '/ossphp/php/get.php?ft=video' }); // 上傳前驗證 function checkUp1(n){ // 查看視頻大小(mb) var fileObj = document.getElementById(n).files[0]; var relSize = parseInt(fileObj.size/1024/1024); if(relSize > 10){ // 大于10mb alert('提示','視屏超過10MB,請重新上傳!'); return false; } // 查看視頻類型 var tv_id =document.getElementById(n).value;//根據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","不是指定視頻格式,重新選擇"); return false; } return true; } //上傳中 function loadup(){ } // 上傳成功后操作 function upback1(data){ // data 成功后的參數 } /**上傳功能封裝**/ 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進度條類 //percent進度數字類 //load_content上傳區域 $('#myupload1').ajaxSubmit({ dataType: 'json', //數據格式為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 + '%'; //獲得進度 $('.speed_num').css('width',percentVal); $('.persent_em').html(percentComplete); }, success: function(data) { //成功 $('.load_content').html('<em >圖片上傳</em>'); //上傳成功后還原 $("#"+n).attr('name',''); setFileUpload(options); upflag=true; backfun1(data); }, error:function(xhr){ //上傳失敗 $('.load_content').html('<em >圖片上傳</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() { //可以判斷當前expire是否超過了當前時間,如果超過了當前時間,就重新取一下.3s 做為緩沖 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; //} }; }
感謝各位的閱讀!關于“JavaScript如何實現上傳文件,圖片,視頻功能”這篇文章就分享到這里了,希望以上內容可以對大家有一定的幫助,讓大家可以學到更多知識,如果覺得文章不錯,可以把它分享出去讓更多的人看到吧!
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。