具有不同id的按钮可以调用相同的js函数

Question

foreach ($_SESSION['songlist']['items'] as $key => $value1) {
    $id = $value1['id']['videoId'];
    session_start();
    $_SESSION['id'] = $id;

    echo "<br>";
    echo "<iframe src='//www.youtube.com/embed/$id?enablejsapi=1' frameborder='0' allowfullscreen id='video'></iframe>";echo "<br>";
    echo '<div id="Added" style="display:none;">ADDED!</div>';
    echo "<form id='demo' method='POST' action=''><button type='button' name='button' id='$id' method='POST' onclick='Count($id)'>Add to playlist</button></form>";
}

This is my button

I want to have a separate counter for different buttons using js onclick function.