subject
div the contenteditable function can be copied into or accepted by HTML. If I copy an article from SF to this div, the original HTML tag of SF will be copied.

Code

<div contenteditable=true"></div>

question

1. does not know js , jquery what function can be implemented: if my copied content contains the HTML tag, then automatically clear its tag, leaving only the text?
2. there are < iframe src*=instagram (or < iframe > ) headers in the content of the HTML tag, and the other HTML header tag is emptied, leaving only the text, and then added to div ?