首先得导入jquery.form.js文件,下面src是相对于改js文件位置,
<script type="text/javascript" src="jquery/jquery-form.js"></script>
<script type="text/javascript"> var BYTES_PER_CHUNK = 1024 * 1024; // 每个文件切片大小定为1MB . var slices; var totalSlices; //发送请求 function sendRequest() { var blob = document.getElementById("file").files[0]; var start = 0; var end; var index = 0; // 计算文件切片总数 slices = Math.ceil(blob.size / BYTES_PER_CHUNK); totalSlices= slices; while(start < blob.size) { end = start + BYTES_PER_CHUNK; if(end > blob.size) { end = blob.size; } uploadFile(blob, index, start, end); start = end; index++; if ( index>=totalSlices ) location="reboot.htm"; } } //上传文件 function uploadFile(blob, index, start, end) { var xhr; var fd; var chunk; var sliceIndex=blob.name+index; chunk =blob.slice(start,end);//切割文件 fd = new FormData(); fd.append("UpgradeFileName", chunk, sliceIndex); var xhr = new XMLHttpRequest(); xhr.open('POST', 'cmd.cgi?cmd_tag=firmware_upgrade&group_tag=upgrade', false);//false指同步上传,因为我的服务器内存较小,选择同步,如果追求速度,可以选择 //ture,异步上传 xhr.send(fd); if((xhr.status >=200 && xhr.status < 300) || xhr.status == 304){ setTimeout("",10); }else{ uploadFile(blob, index, start, end); } } </script>