(JavaScript) The MIME Content-Type Header Field
Explains the ContentType property and the Content-Type header field including the various attributes that may be included.
var success = false;
// Every part in a MIME messsage should include a Content-Type header field.
// The Content-Type indicates the type of content contained in the MIME part.
// For example: text/plain, image/jpeg, application/pdf, application/json, multipart/mixed, etc.
// Multipart content types are those where the MIME part's body is composed of N inner MIME messages,
// separated by a boundary string.
// This is how MIME gets a nested, tree-like structure. The most common multipart MIME types
// are (for email related MIME) multipart/mixed, multipart/alternative, and multipart/related,
// and for HTTP related MIME, it is multipart/form-data.
var mime = new CkMime();
// The Content-Type header field can be set or modified in two ways.
// 1) By setting the ContentType, Micalg, Name, Charset, Boundary, or Protocol properties.
// Setting the ContentType property sets the primary value (such as "text/plain") of the header field.
// Each of the other properties listed above will replace or add a particular attribute value.
// 2) By setting the entire contents of the ContentType header with the SetHeaderField method.
// This updates each of the Content-Type related properties.
// For example:
mime.ContentType = "text/plain";
mime.Charset = "utf-8";
// The Content-Type header field contains this:
// Content-Type: text/plain; charset=utf-8
console.log(mime.GetEntireHead());
console.log("-");
mime.SetHeaderField("Content-Type","image/jpeg; name=\"kitty.jpg\"");
// The Content-Type header field now contains this:
// Content-Type: image/jpeg; name="kitty.jpg"
console.log(mime.GetEntireHead());
console.log("-");
// Notice how the properties have been updated:
console.log("ContentType property: " + mime.ContentType);
console.log("Charset property: " + mime.Charset);
console.log("Name property: " + mime.Name);
console.log("-");
// To change a particular attribute value, set the property.
mime.Name = "doggy.jpg";
console.log(mime.GetEntireHead());
console.log("-");
// To remove an attribute value from the Content-Type header,
// set the property to an empty string.
mime.Name = "";
console.log(mime.GetEntireHead());
console.log("-");
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