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js實現分割上傳大檔案，js分割上傳
本文執行個體介紹了js上傳檔案操作，分享給大家供大家參考，具體內容如下
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN"><head><title>分割大檔案上傳</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><style> #test{ width: 200px; height: 100px; border: 1px solid green; display: none; } #img{ width: 50px; height: 50px; display: none; } #upimg{ text-align: center; font: 8px/10px '微軟雅黑','黑體',sans-serif; width: 300px; height: 10px; border: 1px solid green; } #load{ width: 0%; height: 100%; background: green; text-align: center; }</style></head> <body> <form enctype="multipart/form-data" action="file.php" method="post"> <!-- <input type="file" name="pic" /> <div id="img"></div> <input type="button" value="uploadimg" onclick="upimg();" /><br /> --> <div id="upimg"> <div id="load"></div> </div> <input type="file" name="mof" multiple="multiple"/> <input type="button" value="uploadfile" onclick="upfile();" /> <input type="submit" value="submit" /> </form> <div id="test"> 測試是否DIV消失 </div><script type="text/javascript"> var dom=document.getElementsByTagName('form')[0]; dom.onsubmit=function(){ //return false; } var xhr=new XMLHttpRequest(); var fd; var des=document.getElementById('load'); var num=document.getElementById('upimg'); var file; const LENGTH=10*1024*1024; var start; var end; var blob; var pecent; var filename; //var pending; //var clock; function upfile(){ start=0; end=LENGTH+start; //pending=false; file=document.getElementsByName('mof')[0].files[0]; //filename = file.name; if(!file){ alert('請選擇檔案'); return; } //clock=setInterval('up()',1000); up(); } function up(){ /* if(pending){ return; } */ if(start<file.size){ xhr.open('POST','file.php',true); //xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded'); xhr.onreadystatechange=function(){ if(this.readyState==4){ if(this.status>=200&&this.status<300){ if(this.responseText.indexOf('failed') >= 0){ //alert(this.responseText); alert('檔案發送失敗，請重新發送'); des.style.width='0%'; //num.innerHTML=''; //clearInterval(clock); }else{ //alert(this.responseText) // pending=false; start=end; end=start+LENGTH; setTimeout('up()',1000); } } } } xhr.upload.onprogress=function(ev){ if(ev.lengthComputable){ pecent=100*(ev.loaded+start)/file.size; if(pecent>100){ pecent=100; } //num.innerHTML=parseInt(pecent)+'%'; des.style.width=pecent+'%'; des.innerHTML = parseInt(pecent)+'%' } } //分割檔案核心部分slice blob=file.slice(start,end); fd=new FormData(); fd.append('mof',blob); fd.append('test',file.name); //console.log(fd); //pending=true; xhr.send(fd); }else{ //clearInterval(clock); } } function change(){ des.style.width='0%'; } </script> </body></html>
file.php:
<?php /**** waited****///print_r($_FILES);exit;$file = $_FILES['mof'];$type = trim(strrchr($_POST['test'], '.'),'.');// print_r($_POST['test']);exit;if($file['error']==0){ if(!file_exists('./upload/upload.'.$type)){ if(!move_uploaded_file($file['tmp_name'],'./upload/upload.'.$type)){ echo 'failed'; } }else{ $content=file_get_contents($file['tmp_name']); if (!file_put_contents('./upload/upload.'.$type, $content,FILE_APPEND)) { echo 'failed'; } }}else{ echo 'failed';}?>
1 運行：
2 選擇2G檔案測試:
3 完成並正常播放:
以上就是本文的全部內容，希望對大家的學習有所協助。
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