html5新特性:异步上传文件
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html5新特性:异步上传文件
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<!DOCTYPE html><html><head><meta charset="utf-8"/><title>html5文件上傳</title></head><body>
<input type="file" name="file" id="file" /><br/><input type="submit" value="提交" id="submit" />
<script>var fileinput=document.getElementById('file');var btn=document.getElementById('submit');
btn.οnclick=function(){var file=fileinput.files[0];var formdata=new FormData();formdata.append('file',file);var xhr=new XMLHttpRequest();xhr.open("POST",'upload.php',true);xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
xhr.upload.addEventListener("progress",function(e){document.title= e.loaded/ e.total;},false)
xhr.addEventListener("load", function(e){alert(e.target.responseText);}, false);
xhr.onreadystatechange=function(){console.log(xhr.readyState)}xhr.send(formdata)}</script></body></html>
<input type="file" name="file" id="file" /><br/><input type="submit" value="提交" id="submit" />
<script>var fileinput=document.getElementById('file');var btn=document.getElementById('submit');
btn.οnclick=function(){var file=fileinput.files[0];var formdata=new FormData();formdata.append('file',file);var xhr=new XMLHttpRequest();xhr.open("POST",'upload.php',true);xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
xhr.upload.addEventListener("progress",function(e){document.title= e.loaded/ e.total;},false)
xhr.addEventListener("load", function(e){alert(e.target.responseText);}, false);
xhr.onreadystatechange=function(){console.log(xhr.readyState)}xhr.send(formdata)}</script></body></html>
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