If i understand you correctly, following fiddle will help you in initializing and destroying ckeditor.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CKEditor</title>
<script src="https://cdn.ckeditor.com/4.8.0/standard/ckeditor.js"></script>
</head>
<body>
<div name="editor1">TEST CONTENT</div>
<button id="toogleEditor">
TOOGLE EDITOR
</button>
</body>
</html>
Here is the JS
var editorInstance;
document.getElementById('toogleEditor').addEventListener('click',function() {
if (CKEDITOR) {
if (editorInstance) {
editorInstance.destroy();
editorInstance = undefined;
} else {
editorInstance = CKEDITOR.replace('editor1');
editorInstance.setData("MY HTML DATA");
}
}
})
Fiddle