nl_tokens: removeClass
pl_tokens: function _removeClass ( element , cName ) { if ( ! element ) return ; if ( typeof element . className === 'string' ) { if ( _hasClass ( element , cName ) ) { element . className = element . className . replace ( <mask> RegExp ( "(\\s|^)" + cName + "(\\s|$)" ) , " " ) ; // replace方法是替换  // trim. element . className = stringUtils . trim ( element . className ) ; } ; } }