nl_tokens: 显示工具栏 Display toolbar
pl_tokens: function ( callback ) { var settings = this . settings ; if ( <mask> . readOnly ) { return this ; } if ( settings . toolbar && ( this . toolbar . length < 1 || this . toolbar . find ( "." + this . classPrefix + "menu" ) . html ( ) === "" ) ) { this . setToolbar ( ) ; } settings . toolbar = true ; this . toolbar . show ( ) ; this . resize ( ) ; $ . proxy ( callback || function ( ) { } , this ) ( ) ; return this ; }