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html - Is it possible to validate the size and type of input=file in html5

I was reading this http://dev.w3.org/html5/markup/input.file.html, but I only found the "accept" attribute.

I tried this

<input type="file" name="imagefilename" accept="image/x-png, image/gif, image/jpeg" />

Is it possible client-side validation of file size?

I found this technique for IE

<html>
<head>
<script>
function getSize()
{
    var myFSO = new ActiveXObject("Scripting.FileSystemObject");
    var filepath = document.upload.file.value;
    var thefile = myFSO.getFile(filepath);
    var size = thefile.size;
    alert(size + " bytes");
}
</script>
</head>
<body>
<form name="upload">
<input type="file" name="file">
<input type="button" value="Size?" onClick="getSize();">
</form>
</body>
</html>

Is it possible to do the same using html5 filesystem api ?

UPDATE

I could do this (demo):

<!doctype html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script>
</head>
<body>
    <form >
        <input type=file id=f max-size=32154 >
        <input type=submit>
    </form>
<script>
$(function(){
    $('form').submit(function(){
        var isOk = true;
        $('input[type=file][max-size]').each(function(){
            if(typeof this.files[0] !== 'undefined'){
                var maxSize = parseInt($(this).attr('max-size'),10),
                size = this.files[0].fileSize;
                isOk = maxSize > size;
                return isOk;
            }
        });
        return isOk;
    });
});
</script>
</body>

It is working fine, but I think It will be better to a native html5 attr to validate

See Question&Answers more detail:os

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    <form  class="upload-form">
        <input class="upload-file" data-max-size="2048" type="file" >
        <input type=submit>
    </form>
    <script>
$(function(){
    var fileInput = $('.upload-file');
    var maxSize = fileInput.data('max-size');
    $('.upload-form').submit(function(e){
        if(fileInput.get(0).files.length){
            var fileSize = fileInput.get(0).files[0].size; // in bytes
            if(fileSize>maxSize){
                alert('file size is more then' + maxSize + ' bytes');
                return false;
            }else{
                alert('file size is correct- '+fileSize+' bytes');
            }
        }else{
            alert('choose file, please');
            return false;
        }

    });
});
    </script>

http://jsfiddle.net/9bhcB/2/


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