jquery audio tag get duration code example

Example: Get audio file duration in jQuery

function analyize_mp3_add_meta_box() {
	add_meta_box(
		'analyize_mp3-analyize-mp3',
		__( 'Analyize MP3', 'analyize_mp3' ),
		'analyize_mp3_html',
		'post',
		'normal',
		'default'
	);
}
add_action( 'add_meta_boxes', 'analyize_mp3_add_meta_box' );
function analyize_mp3_html( $post) {
wp_nonce_field( '_analyize_mp3_nonce', 'analyize_mp3_nonce' ); ?>
<style type="text/css">
    audio {display: none;}
</style>
<script type='text/javascript'>//<![CDATA[
    jQuery(function(){
    var objectUrl;
    jQuery("#audio").on("canplaythrough", function(e){
        var seconds = e.currentTarget.duration;
        var duration = moment.duration(seconds, "seconds");
        var time = "";
        var hours = duration.hours();
        if (hours > 0) { time = hours + ":" ; }
        time = time + duration.minutes() + ":" + duration.seconds();
        jQuery("#duration").text(time);
        jQuery('#timelength').val(time);
        URL.revokeObjectURL(objectUrl);
    });
    jQuery("#file").change(function(e){
        var file = e.currentTarget.files[0];
        jQuery("#filesize").text(file.size);
        jQuery('#size').val(file.size);
        objectUrl = URL.createObjectURL(file);
        jQuery("#audio").prop("src", objectUrl);
    });
    });//]]> 
</script>    
<input type="file" id="file" />    
<audio id="audio"></audio>    
<p>
    <label>File Size:</label>
    <span id="filesize"></span>
    <input type="hidden" id="size" name="size" value=""/>
</p>    
<p>
    <label>Song Duration:</label>
    <span id="duration"></span>
    <input type="hidden" id="timelength" name="time" value=""/>
</p>        
<?php }