Why is my tinyMCE initialization failing? - tinymce

Question

the variable in double brackets comes from a Jinja/Flask template
here is the value of that variable, it is string
'<div id="item" >test</div>'
<script type="text/javascript">
tinymce.init({
selector: 'textarea',
setup: function (editor) {
editor.on('init', function (e) {
editor.setContent("{{editor_content|safe}}");
});
},
plugins: [
'advlist autolink autoresize link image imagetools lists charmap print preview hr anchor pagebreak spellchecker',
'searchreplace wordcount visualblocks visualchars code fullscreen insertdatetime media nonbreaking',
'save table directionality template paste codesample'
],
imagetools_toolbar: "rotateleft rotateright | flipv fliph | editimage imageoptions",
toolbar: 'insertfile undo redo paste | styleselect | bold italic | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | link image | print preview media fullpage | forecolor backcolor emoticons | codesample',
images_upload_url: '{{ url_for("imageuploader") }}',
automatic_uploads: true,
images_reuse_filename: false,
images_upload_base_path: '/static/uploads',
visualblocks_default_state: true,
forced_root_block : 'p',
});
</script>
My code fails, this is what the browser console shows
Uncaught SyntaxError: missing ) after argument list
{{editor_content|safe}} instructs Jinja not to escape the code as it should be HTML
Update
More troubleshooting shows me that this is OK
"<div id='test'>sdsdsd</div>"
while this is not
'<div id="test">sdsdsd</div>'
How do I get around this because the source of the content of my editor uses " and not '

Answer 1

Turns out that inconsistent use of " in the initialization string is causing this issue
You should use " within tags for properties and you should use ' when initializing the editor
editor.setContent('{{editor_content|safe}}');