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How to use Rich Text Editor for XUL application

I am trying to implement a Rich Text editor, for example http://tinymce.moxiecode.com/ for my XUL application. It seems like I cannot use tinymce, as some of its scripts use the document.body element, and firefox does not support it. Has XUL implemented an advanced text editor? Please let me know.

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It is not that firefox does not support document.body. documentdiffers depending on which document you have. In HTML you have it document.body, because an HTML document will always have an element <BODY>. XUL does not <BODY>, therefore it is natural that a document has no property document.body.

The problem is that TinyMCE is highly dependent on the fact that the document is HTML. I do not know the code for TinyMCE, but I would suspect that it can be modified to support XUL.

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HTML <frame>with TinyMCE is the easiest way to do this. A more complex, but perhaps better way would be to include the tag <body xmlns="http://www.w3.org/1999/xhtml"/>in the document and assign document.body to this element.

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<html:iframe src="URL to your editor"> -

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Source: https://habr.com/ru/post/1725763/

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