官方文档：
https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_editor.html#event-paste
https://ckeditor.com/docs/ckeditor4/latest/guide/dev_clipboard.html
使用方法：
CKEDITOR.on(‘instanceReady‘, function (e) { var editor = e.editor; editor.on(‘paste‘, function( evt ) { evt.data.dataValue = evt.data.dataValue .replace( /zooterkins/gi, ‘z********s‘ ) .replace( /gadzooks/gi, ‘g******s‘ ); } ); });
原文：https://www.cnblogs.com/tujia/p/14281130.html