JS native upload large file display progress bar-php upload file
##Modify the required size in php.ini: upload_max_filesize = 8Mpost_max_size = 10M
memory_limit = 20M
<!DOCTYPE html><html><head> <title>原生JS大文件显示进度条</title> <meta charset="UTF-8"> <style type="text/css"> #parent{position: relative;width: 500px;height:20px;border:1px solid #ccc;display: none;border-radius:20px} #child{position: absolute;width:0%;height:20px;background: #5FB878;display: none;line-height: 20px;color: #ffffff;font-size: 12px;border-radius:20px} </style> <script type="text/javascript"> function $(id){ return document.getElementById(id); } </script></head><body> <form action="" method="post"> <p id="parent"> <p id="child"></p> </p> <p>上传文件:<input type="file" name="file"></p> <p><input type="submit" value="提交" id="submit"></p> </form> <script type="text/javascript"> var oForm = document.getElementsByTagName('form')[0]; var oSubmit = $('submit'); //如果多个人同时提交这个表单的时候,由于是异步的请求,互不影响 oSubmit.onclick = function(){ try{ var xhr = new XMLHttpRequest(); }catch(e){ var xhr = new ActiveXObject("Msxml2.XMLHTTP"); } xhr.upload.onprogress = function(e){ var ev = e || window.event; var percent = Math.floor((ev.loaded / ev.total)*100); // console.log(percent); //将百分比显示到进度条 $('parent').style.display = 'block'; $('child').style.display = 'block'; //将上传进度的百分比显示到child里面 $('child').style.width = percent+'%'; $('child').style.textAlign = 'center'; $('child').innerHTML = percent+'%'; //判断如果百分比到达100%时候,隐藏掉 if(percent==100){ $('parent').style.display = 'none'; $('child').style.display = 'none'; } } xhr.open('post','progress.php',true); var form = new FormData(oForm); xhr.send(form); xhr.onreadystatechange = function(){ if(xhr.readyState==4 && xhr.status==200){ eval("var obj ="+xhr.responseText); if(obj.status){ alert('上传成功'); }else{ alert('上传失败'); } } } //阻止表单提交 return false; } </script></body></html>
<?php //开始上传 //注意:文件是windows系统的文件,采用的gbk编码,php文件使用的是utf-8编码 //我们不能直接修改文件的编码,只能临时修改一下php的编码 $dst_file = $_FILES['file']['name']; $dst_file = iconv('utf-8', 'gbk', $dst_file); if(move_uploaded_file($_FILES['file']['tmp_name'],$dst_file)){ $data['status'] = 1; }else{ $data['status'] = 0; } echo json_encode($data);
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