Ckeditor Removed Javascript. Here's Solution

After WYSIWYG in CKEditor was updated, we came across a problem with stripping tags in one of the projects we maintain. Having googled a bit, I understood that not only we have the problem. 

A solution was found in the documentation. Open the configuration file and write in a regular expression for the parser. 

    config.protectedSource.push( //g ); /* script tags */
    config.allowedContent = true; /* all tags */

Hopefully, the article is useful. 

P.S.: Leave your questions in the comments)