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  • audio play in html using JavaScript or jQuery

    Website Link

    prefetch audio js

    audio = new Audio(_player.src);
audio.preload = 'auto';

    Promise error

       var playPromise  =   _player.play();
    if (playPromise !== undefined) {
  playPromise.then(function() {
  //  console.log(_player.src+" "+selected.innerText );
  $("#playing").html("(Now playing : "+selected.innerText+")");
    // Automatic playback started!
  }).catch(function(error) {
    //console.log(error+" "+_player.src);
    // Automatic playback failed.
    // Show a UI element to let the user manually start playback.
  });
}

    Get audio duration in JavaScript

    var d = document.getElementById("player").duration;
  • How check incoming request in Linux / ubuntu from port 443 – https

    Check incoming request from port 443

    $ netstat -an | grep 443

    Check incoming request from port 443 with selected IP address

    $ netstat -an | grep 443 | grep 103.173.93.2

    Check incoming request from port 443 only ESTABLISHED connection

    $ netstat -an | grep 443 | grep ESTABLISHED

    Check number of incoming request from port 443 

    $ netstat -an | grep 443 | wc -l
  • How check incoming request in Linux / ubuntu from port 80 – http

    Check incoming request from port 80

    $ netstat -an | grep 80

    Check incoming request from port 80 with selected IP address

    $ netstat -an | grep 80 | grep 103.173.93.2

    Check incoming request from port 80 only ESTABLISHED connection

    $ netstat -an | grep 80 | grep ESTABLISHED

    Check number of incoming request from port 80

    $ netstat -an | grep 80 | wc -l