I have a page containing one tinymce4 editor instance. I want to initialize this editor with some content, programmatically. I know that I have to call: tinymce.get('editor').setContent('my content');

However I have trouble to do this when tinymce is getting initialized. This question has already been asked: initialize tinyMCE with default content but the answer that was given at that time is not working, at least for tinymce4.

Here is what I have tried:

1st attempt:

    tinymce.init({

      mode: textareas,

      ...

      setup: function (editor) {

         ...

         editor.setContent('my content');

      }

   });

-> Uncaught TypeError: Cannot read property 'body' of undefined

2nd attempt:

    tinymce.init({

      mode: textareas,

      ...

    };

    tinymce.get('editor').setContent('my content');

-> Uncaught TypeError: Cannot read property 'setContent' of null
(however if I do this when the page containing the tinymce editor has already been loaded, it works).

3rd attempt (SO 12083361 answer):

$(document).ready(function(){

    tinymce.get('editor').setContent('my content');

});

-> Uncaught TypeError: Cannot read property 'setContent' of null

All this fails with tinymce.activeeditor.setContent('my content'); as well.

Where should I place tinymce.get('editor').setContent('my content');in my code to have it working ?