[Aetae]

if (!String.prototype.trim) { //IE < 9
  String.prototype.trim = function () {
    return this.replace(/^\s+|\s+$/g, '');
  };
}
var sssr = "   23   a       12    323            15    "; 
var arr = sssr.trim().split(/\s+/); //1
alert(arr)
var arr = sssr.match(/\S+/g); //2
alert(arr)