function isWysiwygareaAvailable() {
// If in development mode, then the wysiwygarea must be available.
// Split REV into two strings so builder does not replace it :D.
if ( CKEDITOR.revision == ( '%RE' + 'V%' ) ) {
return true;
}
return !!CKEDITOR.plugins.get( 'wysiwygarea' );
}
我在CKeditor 4.9.0自定义版本中找到了这段代码。为什么REV被分成两个字符串?使用什么JavaScript技术?