Wysiwyg instead of textarea?

Question

JavaScript

tell me how to implement a wysiwyg editor instead of a regular textarea, preferably bootstrap

<textarea onkeyup="textAreaAdjust(this, 70)" name="postText" class="form-control postText" cols="10" rows="3" placeholder="<?php echo $wo['lang']['publisher_box_placeholder']; ?>" dir="auto"><?php echo $hashtag;?></textarea>

Answer 1

Connect some ready-made editor to the textarea, for example CKEditor

Answer 2

wysiwyg is not done in textarea, but in editable div + lots of JavasScript.