text: /* 1119
   * (^([0-9]*[.][0-9]*[1-9]+[0-9]*)$)|(^([0-9]*[1-9]+[0-9]*[.][0-9]+)$)|(^([1-9]+[0-9]*)$)
   * EXPONENT
   * nums:3
   * EXPONENT AttackString:".1"+"1"*1024+"!1 _SLQ_2"
   */
  var REGEX = /(^([0-9]*[.][0-9]*[1-9]+[0-9]*)$)|(^([0-9]*[1-9]+[0-9]*[.][0-9]+)$)|(^([1-9]+[0-9]*)$)/
  for(var i = 1; i <= 5000000; i++) {
      var time = Date.now();
      var attack_str = '.1' + '1'.repeat(i*1) + '!1 _SLQ_2'
      REGEX.exec(attack_str)
      // REGEX.test(attack_str);
      // attack_str.search(REGEX)
      // attack_str.match(REGEX)
      var time_cost = Date.now() - time;
      console.log(i * 1 + ": " + time_cost+" ms")
  }