title: How to check if a value isn't changed in between <span> tag
body: <p>The page looks like:</p>
  
  <pre><code>&lt;html&gt;
    &lt;span id="somespan"&gt;1000&lt;/span&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>The value of somespan increases every 1 or 2 minutes.<br></p>
  
  <p>With Javascript/JQuery, how can I check if the value is same or increased every 5 minutes.</p>
  
  <p>I mean at 16:00 the value is 1000 and 2 minutes later so at 16:02 its 1200.<br>
  How can I check if its changed.</p>
  
  <p>I wanna make something like:</p>
  
  <pre><code>var somespan = $("#somespan").text();
  
  if(somespan isnt changed) {
    #console.log('still same.')    
  }
  </code></pre>
  
  <p>The platform i will use this code is Google Chrome -> Tampermonkey</p>