Check for changes in an html table

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Good evening. I have a table that I pick up via Curl. It updates every 30 seconds, and displays in an html. This table has the status of a character in a game (live or dead).

I wanted to know how to generate an Alert of each row of the table that was modified (went from live to dead, and vice versa).

Curl:

<?

$ch = curl_init("http://l2metal.com/?page=boss");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$page = curl_exec($ch);

preg_match('#<table[^>]*>(.+?)</table>#is', $page, $matches);
foreach ($matches as &$match) {
    $match = $match;
}
echo '<table>';
    echo $matches[1];
echo '</table>';

?>

Jquery:

$.get('http://meusite.com.br/boss.php', function(data){
  $("#boss").html(data);
})

This shows me a table. So far it’s OK, but I wanted a light of what I can do to display an Alert when some monster changes from DEAD to ALIVE. I’m lost in that part.

php jquery curl

  • Post your code and what problem you’re having, that members of the community will help you and answer your problem more easily and quickly,

  • https://pt.meta.stackoverflow.com/questions/5483/manual-de-como-n%C3%83o-fazer-perguntas/5484#5484

  • Sorry, I was on my cell phone last night. Code posted!

1 answer

1


My guess is you’ll have to read the chart into some variable. You do a foreach for each line, and you keep the name and state in a global variable, when you re-compare and update to that variable.

by variable I mean some array name(key) and value (monster state)

ex:

<html>

  <head>
    <script data-require="[email protected]" data-semver="3.1.1" src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  </head>

  <body>
    <table id="test">
      <tbody>
        <tr>
          <td>
          Jose
        </td>
          <td>
          Vivo
        </td>
          <td></td>
        </tr>
        <tr>
          <td>
          Andre
        </td>
          <td>
          Morto
        </td>
          <td></td>
        </tr>
        <tr>
          <td>
          Jose
        </td>
          <td>
          Vivo
        </td>
          <td></td>
        </tr>
        <tr>
          <td>
          Jose
        </td>
          <td>
          Vivo
        </td>
          <td></td>
        </tr>
      </tbody>
    </table>
    <script>

      var array ={"Jose":"Vivo", "Andre":"Vivo"};

       $("#test tr").each(function(index){
debugger;
         var key = $.trim($(this).find("td:first-child").text());
         var value = $.trim($(this).find("td:nth-child(2)").text());

         array[key] != value ? alert(key + " - ..") : "";
         array[key] = value;
                 });


</script>
  </body>

</html>

  • There would be some example of how to do this: It may be an answered question, link, anything. Thank you!

  • 1

    I added an example.. now what you have to think about is that you need the first time you enter the page you have q popular the array, eg in documentready.. and from then on this code is worth to you.

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