JavaScript

Create a multipart/related MIME Entity

Demonstrates the Chilkat Mime.NewMultipartRelated method, which initializes the object as an empty multipart/related entity. It takes no arguments; the primary part and its related resources are then appended.

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: multipart/related ties a primary part to the resources it references — most commonly an HTML body and the inline images it embeds via cid: references. Unlike a plain attachment, a related image is displayed within the message rather than listed separately. The HTML part comes first, followed by each referenced resource with a matching Content-ID.

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.NewMultipartRelated method, which initializes the object as an empty
//  multipart/related entity, clearing any existing content.  It takes no arguments.

var mime = new CkMime();

success = mime.NewMultipartRelated();
if (success == false) {
    console.log(mime.LastErrorText);
    return;
}

//  multipart/related groups a primary part with the resources it references, such as an HTML body
//  and the inline images it displays.
var htmlPart = new CkMime();
success = htmlPart.SetBodyFromHtml("<html><body><img src=\"cid:logo\"></body></html>");
if (success == false) {
    console.log(htmlPart.LastErrorText);
    return;
}

success = mime.AppendPart(htmlPart);
if (success == false) {
    console.log(mime.LastErrorText);
    return;
}

success = mime.AppendPartFromFile("qa_data/logo.png");
if (success == false) {
    console.log(mime.LastErrorText);
    return;
}

console.log("Number of parts: " + mime.NumParts);