pg001.html

<!DOCTYPE html>

<html>

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title></title>
    <meta name="description" content="">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="">
</head>

<body>
    <p id="demo01"></p>
    <script>
        var txt = '{"name":"Tommy", "message":"Hello world!", "exit":"Bye!"}'
        var obj = JSON.parse(txt);
        document.getElementById("demo01").innerHTML = obj.name + " says, \"" + obj.message + "\" " + obj.exi
    </script>
    <hr>

    <h2>Use the XMLHttpRequest to get the content of a file.</h2>
    <p>The content is written in JSON format, and can easily be converted into a JavaScript object.</p>

    <p id="demo"></p>

    <script>
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                var myObj = JSON.parse(this.responseText);
                document.getElementById("demo").innerHTML = myObj.name;
            }
        };
        xmlhttp.open("GET", "json_demo.txt", true);
        xmlhttp.send();
    </script>

    <p>Take a look at <a href="json_demo.txt" target="_blank">json_demo.txt</a></p>


</body>

</html>