(JavaScript) QR Code Generator via api.qrserver.com REST API

See more HTTP Examples

For more information, see https://goqr.me/api/doc/create-qr-code/

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;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var http = new CkHttp();

// Send the following GET request to get a binary response.
// The body of the binary response contains the image data for the QR code.
// https://api.qrserver.com/v1/create-qr-code/?data=[URL-encoded-text]&size=[pixels]x[pixels]

var queryParams = new CkJsonObject();
queryParams.UpdateString("data","Hello World");
queryParams.UpdateString("size","100x100");

// Get a PNG file..
// Possible formats are:
// png
// gif
// jpeg
// jpg
// svg
// eps
// Case matters.  Use lowercase.
queryParams.UpdateString("format","png");

// Send the GET request to an endpoint.
// Chilkat will add the url-encoded query params passed in the JSON.
var resp = new CkHttpResponse();
success = http.HttpParams("GET","https://api.qrserver.com/v1/create-qr-code/",queryParams,resp);
if (success == false) {
    console.log(http.LastErrorText);
    return;
}

// Did it succeed?
if (resp.StatusCode !== 200) {
    // The response body, if anything, would not be the image data, but would likely be the error text (or HTML, or whatever...)
    console.log(resp.BodyStr);
    console.log("Response status = " + resp.StatusCode);
    console.log("Failed.");
    return;
}

// Success if we get here..
// Save the binary body as the PNG file, or you can get the bytes of the PNG..
success = resp.SaveBodyBinary("c:/temp/qa_output/qr_code.png");

// Or get the bytes:
var bd = new CkBinData();
resp.GetBodyBd(bd);
// Use the bytes in bd...
// See the online reference documentation for the function to access the bytes directly.

console.log("Success.");