[Riim]

String.prototype.trim = function(charList) {
	return this.replace(/^\s+|\s+$/g, '');
};

var str = 'jdhf    ,,,  dshfjk,,,,sah~!@#$%^dksa d<><><>gfhgdf   sd';
var result = str.replace(/[^\-\wа-я]+/gi, ' ').trim().split(' ');
alert(result.join('\r\n'));

так?