幽灵资源网 Design By www.bzswh.com
本文实例讲述了JS+html5实现异步上传图片显示上传文件进度条功能。分享给大家供大家参考,具体如下:
<html> <head> </head> <body> <p> emo_album_id:<input type="text" name="emo_album_id" id="emo_album_id" value='1'> </p> <p> name:<input type="text" name="title" id="title"> </p> <div class="row"> <label for="file"> Upload Image:</label> <input type="file" name="fileToUpload" id="fileToUpload" multiple="multiple" onchange="fileSelected();" /> </div> SentenceMovie[photo] <div id="fileName"> </div> <div id="fileSize"> </div> <div id="fileType"> </div> <div id="progressNumber"> </div> <script> function fileSelected() { var file = document.getElementById('fileToUpload').files[0]; if (file) { var fileSize = 0; if (file.size > 1024 * 1024) fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + 'MB'; else fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + 'KB'; document.getElementById('fileName').innerHTML = 'Name: ' + file.name; document.getElementById('fileSize').innerHTML = 'Size: ' + fileSize; document.getElementById('fileType').innerHTML = 'Type: ' + file.type; uploadFile(); } } function uploadFile() { var fd = new FormData(); fd.append("upload_file", document.getElementById('fileToUpload').files[0]); fd.append("emo_album_id", document.getElementById('emo_album_id').value); fd.append("title", document.getElementById('title').value); var xhr = new XMLHttpRequest(); xhr.upload.addEventListener("progress", uploadProgress, false); xhr.addEventListener("load", uploadComplete, false); xhr.addEventListener("error", uploadFailed, false); xhr.addEventListener("abort", uploadCanceled, false); xhr.open("POST", "http://mysae.com/emotions/1/api/index.php/emo/upload"); xhr.send(fd); } function uploadProgress(evt) { if (evt.lengthComputable) { var percentComplete = Math.round(evt.loaded * 100 / evt.total); document.getElementById('progressNumber').innerHTML = percentComplete.toString() + '%'; } else { document.getElementById('progressNumber').innerHTML = 'unable to compute'; } } function uploadComplete(evt) { /* This event is raised when the server send back a response */ alert(evt.target.responseText); } function uploadFailed(evt) { alert("There was an error attempting to upload the file."); } function uploadCanceled(evt) { alert("The upload has been canceled by the user or the browser dropped the connection."); } </script> </body> </html>
更多关于JavaScript相关内容感兴趣的读者可查看本站专题:《JavaScript+HTML5特效与技巧汇总》、《JavaScript图片操作技巧大全》、《JavaScript图形绘制技巧总结》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》
希望本文所述对大家JavaScript程序设计有所帮助。
幽灵资源网 Design By www.bzswh.com
广告合作:本站广告合作请联系QQ:858582 申请时备注:广告合作(否则不回)
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
免责声明:本站文章均来自网站采集或用户投稿,网站不提供任何软件下载或自行开发的软件! 如有用户或公司发现本站内容信息存在侵权行为,请邮件告知! 858582#qq.com
幽灵资源网 Design By www.bzswh.com
暂无评论...