Fetching data using JSONRequest sample code

I am new to web development and this is my first attempt at using JSON. On the JSON website (http://www.json.org/JSONRequest.html), they recommend using JSONRequest.get for certain tasks. However, I keep running into an error stating "JSONRequest is not defined". Here is a look at the code I have been working on:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta Content-Type= application/jsonrequest >

<title>Insert Events Page</title>
</head>
<body> 

<h2>List of ALL events: </h2><br>
<script type="text/javascript">
try {
    JSONRequest.get("http://localhost:8888/mma/event/allevents", function(sn, response, exception){
            alert(exception || response);
    });
}
catch(e) {
    alert(e);
}
</script>

</body>
</html>

Answer №2

This excerpt is directly sourced from the website you provided:

Link to source: http://www.json.org/JSONRequest.html

Here's an example:

requestNumber = JSONRequest.get(
    "https://json.penzance.org/request",
    function (requestNumber, value, exception) {
        if (value) {
            processResponse(value);
        } else {
            processError(exception);
        }
    }
); 

Once JSONRequest.get validates the parameters, it will queue the request and provide a request number. The done function value will be triggered later when the result of the request is determined.

No cookies or implicit authentication details are included in the GET operation. Any authentication data must be incorporated into the URL.

The request can utilize either http or https. This decision is separate from the page's security level.

GET /request HTTP/1.1
Accept: application/jsonrequest
Host: json.penzance.org

Once the server confirms the request, it has until the timeout period ends to generate a response. If the time limit is surpassed, or if the connection is terminated before a full response is transmitted, then the request fails.

HTTP/1.1 200 OK
Content-Type: application/jsonrequest
Content-Length: xxxx

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