//JAVASCRIPT
<input type="file" id="fileUpload" />
<input type="button" value="Upload" onclick="Upload()" />
<script type="text/javascript">
function Upload() {
var fileUpload = document.getElementById("fileUpload");
if (typeof (fileUpload.files) != "undefined") {
var size = parseFloat(fileUpload.files[0].size / 1024).toFixed(2);
alert(size + " KB.");
} else {
alert("This browser does not support HTML5.");
}
}
</script>
//JQUERY
<input type="file" id="fileUpload" />
<input type="button" id="upload" value="Upload" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
$("#upload").bind("click", function () {
if (typeof ($("#fileUpload")[0].files) != "undefined") {
var size = parseFloat($("#fileUpload")[0].files[0].size / 1024).toFixed(2);
alert(size + " KB.");
} else {
alert("This browser does not support HTML5.");
}
});
});
</script>
