curl.html

<!doctype html>
<html lang="en">

<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css"
        integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">

    <title>Hello, world!</title>
</head>

<body>
    <h1 id="ptitle">Post Title</h1>
<h3 id="psub">Sub Title</h3>
<div id="pcontent">

</div>
    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"
        integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj"
        crossorigin="anonymous"></script>
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        integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo"
        crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"
        integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI"
        crossorigin="anonymous"></script>
    <script>
  
  
        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                // Typical action to be performed when the document is ready:
                var data=xhttp.responseText;
                console.log("curl2: "+data);
               // document.getElementById("demo").innerHTML = xhttp.responseText;
               var obj = JSON.parse(data);
               
               var PostTitle=obj.title;
               var PostDesc=obj.sub;
               var PostContent=obj.content;

               document.getElementById("ptitle").innerHTML=PostTitle;
               document.getElementById("psub").innerHTML=PostDesc;
               document.getElementById("pcontent").innerHTML=PostContent;
               document.title = PostTitle+" | Ephrine Apps";


            }
        };
        xhttp.open("GET", "https://ephrinelab.firebaseio.com/post/1.json", true);
        xhttp.send();
    </script>
  
  
</body>

</html>