(JavaScript) curl POST with JSON Input and JSON Output

See more CURL Examples

Note: This example requires Chilkat v11.5.0 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// Run the following curl command

//  curl -X POST https://httpbin.org/post \
//       -H "Content-Type: application/json" \
//       -d '{
//             "title": "foo",
//             "body": "bar",
//             "userId": 1
//           }'

// The backslashes at the end of lines are not required.  Chilkat ignores them if present.
var sbTargetCurl = new CkStringBuilder();
sbTargetCurl.AppendLn(" curl -X POST https://httpbin.org/post \\");
sbTargetCurl.AppendLn("      -H \"Content-Type: application/json\" \\");
sbTargetCurl.AppendLn("      -d '{");
sbTargetCurl.AppendLn("            \"title\": \"foo\",");
sbTargetCurl.AppendLn("            \"body\": \"bar\",");
sbTargetCurl.AppendLn("            \"userId\": 1");
sbTargetCurl.AppendLn("          }'");

var httpCurl = new CkHttpCurl();

// Run the curl command.
success = httpCurl.DoYourThing(sbTargetCurl.GetAsString());
if (success == false) {
    console.log(httpCurl.LastErrorText);
    return;
}

var responseJson = new CkJsonObject();
responseJson.EmitCompact = false;

httpCurl.GetResponseJson(responseJson);

var statusCode = httpCurl.StatusCode;
console.log("response status code: " + statusCode);

console.log(responseJson.Emit());

// Output:

// response status code: 200
// {
//   "args": {},
//   "data": "{\r\n            \"title\": \"foo\",\r\n            \"body\": \"bar\",\r\n            \"userId\": 1\r\n          }",
//   "files": {},
//   "form": {},
//   "headers": {
//     "Content-Length": "96",
//     "Content-Type": "application/json",
//     "Host": "httpbin.org",
//     "X-Amzn-Trace-Id": "Root=1-69e8db8b-459b3bdf7b7a3bc749184968"
//   },
//   "json": {
//     "body": "bar",
//     "title": "foo",
//     "userId": 1
//   },
//   "origin": "123.222.222.222",
//   "url": "https://httpbin.org/post"
// }

// ----------------------------------------------------------------------------------
// Another example:

// curl -X POST https://postman-echo.com/post \
//      -H "Content-Type: application/json" \
//      -d '{"foo":"bar"}'

var targetCurl = "curl -X POST https://postman-echo.com/post -H \"Content-Type: application/json\" -d '{\"foo\":\"bar\"}'";

// Run the curl command.
success = httpCurl.DoYourThing(targetCurl);
if (success == false) {
    console.log(httpCurl.LastErrorText);
    return;
}

httpCurl.GetResponseJson(responseJson);

statusCode = httpCurl.StatusCode;
console.log("response status code: " + statusCode);

console.log(responseJson.Emit());

// Output:

// response status code: 200
// {
//   "args": {},
//   "data": {
//     "foo": "bar"
//   },
//   "files": {},
//   "form": {},
//   "headers": {
//     "host": "postman-echo.com",
//     "content-length": "13",
//     "content-type": "application/json",
//     "x-forwarded-proto": "https",
//     "accept-encoding": "gzip, br"
//   },
//   "json": {
//     "foo": "bar"
//   },
//   "url": "https://postman-echo.com/post"
// }