数组去重的三种方式

function uniq(array) {
  var temp = {}, r = [], len = array.length, val, type;
  for (var i = 0; i < len; i++) {
    val = array[i];
    type = typeof val;
    if (!temp[val]) {
      temp[val] = [type];
      r.push(val);
    } else if (temp[val].indexOf(type) < 0) {
      temp[val].push(type);
      r.push(val);
    }
  }
  return r;
}

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