text: /* 4154
   * ^(?<link>((?<prot>http:\/\/)*(?<subdomain>(www|[^\-\n]*)*)(\.)*(?<domain>[^\-\n]+)\.(?<after>[a-zA-Z]{2,3}[^>\n]*)))$
   * EXPONENT
   * nums:3
   * EXPONENT AttackString:""+":"*16+"! _1_NQ"
   */
  var REGEX = new RegExp("^(?<link>((?<prot>http:\/\/)*(?<subdomain>(www|[^\-\n]*)*)(\.)*(?<domain>[^\-\n]+)\.(?<after>[a-zA-Z]{2,3}[^>\n]*)))$")
  for(var i = 1; i <= 5000000; i++) {
      var time = Date.now();
      var attack_str = '' + ':'.repeat(i*1) + '! _1_NQ'
      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")
  }