JavaScript

Set a MIME Body from a File

Demonstrates the Chilkat Mime.SetBodyFromFile method, which reads a local file and sets it as the body, choosing content headers from the filename extension. The only argument is the file path.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the one-call way to turn a file into a MIME part: Chilkat reads the bytes and infers the Content-Type and transfer encoding from the extension — .jpg becomes image/jpeg with base64, .txt a text type, and so on. It is the natural building block for adding an attachment, usually followed by setting a Content-Disposition and filename.

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.

JavaScript

var success = false;

//  Demonstrates the Mime.SetBodyFromFile method, which reads a local file and sets it as the body,
//  choosing content headers based on the filename extension.  The only argument is the file path.

var mime = new CkMime();

//  The Content-Type and encoding are set from the ".jpg" extension (image/jpeg, base64).
success = mime.SetBodyFromFile("qa_data/photo.jpg");
if (success == false) {
    console.log(mime.LastErrorText);
    return;
}

console.log("Content-Type: " + mime.ContentType);
console.log("Encoding: " + mime.Encoding);