JavaScript

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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 SetAttachmentCharset method, which sets the charset parameter of the
//  Content-Type header field for the attachment at the given zero-based index.

var email = new CkEmail();
email.Subject = "Set attachment charset";

email.AddStringAttachment("notes.txt","Some notes.");

//  Set the charset of the first attachment (index 0) to utf-8.
success = email.SetAttachmentCharset(0,"utf-8");
if (success == false) {
    console.log(email.LastErrorText);
    return true;
}

//  The attachment's Content-Type now includes charset="utf-8".
console.log(email.GetMime());