title: Need help to check winning conditions for a Tic-Tac-Toe game in Js
body: <p>I dont know how to check for the winning conditions.Could someone explain it to me step by step.I'll post my code. Im also new to coding.</p>
  
  <p>prntscr.com/m06ew1</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html&gt;
   &lt;head&gt;
      &lt;title&gt;Tic-Tac-Toe&lt;/title&gt;
      &lt;link rel="stylesheet" href="TicTacToe.css"&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
  
      &lt;h1&gt; Tic-Tac-Toe game!&lt;/h1&gt;
          &lt;div class="grid"&gt;
                  &lt;div class="grid-item" id="grid1" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid2" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid3" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid4" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid5" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid6" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid7" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid8" &gt;&lt;/div&gt;
                  &lt;div class="grid-item" id="grid9" &gt;&lt;/div&gt;
          &lt;/div&gt; 
  
   &lt;/body&gt;
   &lt;script type="text/javascript" src="jquery-3.3.1.js" &gt;&lt;/script&gt;    
   &lt;script type="text/javascript" src="TicTacToe.js" &gt;&lt;/script&gt; 
  
  
          &lt;aside&gt;
              &lt;h2&gt;History&lt;/h2&gt;
  
          &lt;/aside&gt;
  
          &lt;section&gt;Player &lt;span id="player"&gt; &lt;b&gt;1&lt;/b&gt; &lt;/span&gt; it's your 
  turn!&lt;/section&gt;
  
          &lt;footer&gt;
              Copyright Irfan - 2018
          &lt;/footer&gt;
  
  
  &lt;/html&gt;
  
   JSFILE
  
  $("document").ready (function(){
  
  
  const player1 = 'X'
  const player2 = 'O'
  CurrentPlayer = 1
  
  
  
  $(".grid-item").click (function(){
  if(CurrentPlayer == 1) {
   $(this).html(player1);
   $("#player").html("&lt;b&gt;2&lt;b&gt;")
   CurrentPlayer = 2
    }
  
   else if ( CurrentPlayer ==  2) {
    $(this).html(player2);
    $("#player").html("&lt;b&gt;1&lt;b&gt;")
    CurrentPlayer =1
   }
    }); 
    });
  </code></pre>
  
  <p>here is my code and i link a print screen above.Its for a tic tac tow game sdfafsdfdfsafdfasdafsdafafdfasddasfasdfafsdfda</p>