title: Uncaught TypeError: Cannot read property 'get' of undefined
body: <p>Why am I getting this error, when I'm trying to get a response from a file on my own server?</p>
  
  <pre><code>$.get("http://www.example.com/user.php?q=" + client + "", function(response) { 
  
  if(response == "invalid"){
  console.log("invalid login");       
  
      return;
  }
  </code></pre>
  
  <p>And btw, the string client is mentioned already in the code.</p>
  
  <p>And jquery is included.</p>
  
  <p><a href="http://i.gyazo.com/693e6633d211ab6da79598e75c6dde58.png" rel="nofollow">http://i.gyazo.com/693e6633d211ab6da79598e75c6dde58.png</a></p>