title: JQuery to change the text
body: <p>I am new to JQuery and CSS. The problem I am facing is I cannot change the text of the data, no matter how I tried with the id="sensor1" or "sensor4". I am questioning if I can make a span tag like this
  <code>&lt;li&gt;&lt;h2&gt;Temperature 1 &lt;/h2&gt; &lt;span id="sensor1"&gt;500&lt;/span&gt; &lt;/li&gt;</code></p>
  
  <p>My code is at : <a href="https://jsfiddle.net/4rj1jf74/2/" rel="nofollow">https://jsfiddle.net/4rj1jf74/2/</a></p>
  
  <p>I appriciate if you can help and explain to me about this problem. Thank you !</p>