SOURCE

//var s = this.getText();
var s = "1212 1212 434 5656 rer   werwe"
var r = /\s+/g;
s = s.replace(r, ' ');
var words = s.split(/\s+/);
var uqwords = unique1(words);

alert(uqwords);

//去重自定义函数
function unique1(arr) {
  var hash = [];
  for (var i = 0; i < arr.length; i++) {
    if (hash.indexOf(arr[i]) == -1) {
      hash.push(arr[i]);
    }
  }
  return String(hash).replace(/,/g, ' ');
}