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