HELP! Need help with this too

Tell us what’s happening:

Your code so far


<script>
document.addEventListener('DOMContentLoaded', function(){
  document.getElementById('sendMessage').onclick = function(){

    const userName = document.getElementById('name').value;
    const url = 'https://jsonplaceholder.typicode.com/posts';
    // Add your code below this line


    // Add your code above this line
  };
});
</script>

<style>
body {
  text-align: center;
  font-family: "Helvetica", sans-serif;
}
h1 {
  font-size: 2em;
  font-weight: bold;
}
.box {
  border-radius: 5px;
  background-color: #eee;
  padding: 20px 5px;
}
button {
  color: white;
  background-color: #4791d0;
  border-radius: 5px;
  border: 1px solid #4791d0;
  padding: 5px 10px 8px 10px;
}
button:hover {
  background-color: #0F5897;
  border: 1px solid #0F5897;
}
</style>

<h1>Cat Friends</h1>
<p class="message box">
Reply from Server will be here
</p>
<p>
<label for="name">Your name:
  <input type="text" id="name"/>
</label>
<button id="sendMessage">
  Send Message
</button>
</p>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36.

Challenge: Post Data with the JavaScript XMLHttpRequest Method

Link to the challenge:

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