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POSplit multi-file post with Javascript before upload
 

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    <p>I understand the HTML/PHP side of a multi-file upload, but I suppose what I'm after is a Javascript solution that separates the files array pre-post and individually sends the files to a separate PHP program to receive upload and success/fail feedback before continuing. (ie: files[0] -> POST -> Success -> files[1] -> POST -> Success ->etc...) </p> <p>Here is what I use now for a single file -</p> <pre><code> function upload(file){ var data = new FormData(); data.append("file", document.getElementById(file).files[0]); var xmlHTTP = new XMLHttpRequest(); xmlHTTP.open("POST", "uploader.php"); xmlHTTP.send(data); } </code></pre> <p>I realize that the easy way out would be to create multiple file fields, however what I'm trying to do is use <code>&lt;input type="file" multiple&gt;</code> from HTML5 to mass-select a list of files at a time. If I could only separate the files with Javascript, then it would be a simple matter of looping through the above script with an <code>onreadystatechange</code> reporting the success/fail each time.</p> <p>Any ideas?</p> <p>EDIT:<br> Forgive my tunnel vision, that was extremely simple! Here's my full code in case it helps someone else out. </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script language="Javascript"&gt; function multiupload(file){ count = 0; maxcount = document.getElementById(file).files.length; alert(maxcount); upload(file,count); } function upload(file,count){ var data = new FormData(); data.append("file", document.getElementById(file).files[count]); var xmlHTTP = new XMLHttpRequest(); xmlHTTP.open("POST", "uploader.php"); xmlHTTP.onreadystatechange=function(){ if (xmlHTTP.readyState == 4 &amp;&amp; xmlHTTP.status == 200){ count = count+1; if(count&lt;maxcount){ upload(file,count); } } } xmlHTTP.send(data); } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="result"&gt;&lt;/div&gt; &lt;form method="post" action=""&gt; &lt;input type="file" name="file" id="file" multiple&gt; &lt;input type="button" name="submit" value="Upload" onclick="multiupload('file');void(0);"&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. COYou can get rid of the `maxcount` logic by just increasing your `count` until `files[count]` returns null.
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