Regular Expression to match 3 or more Consecutive Sequential Characters and Consecutive Identical Characters

Question

I need regular expressions to match the below cases.

1. 3 or more consecutive sequential characters/numbers; e.g. 123, abc, 789, pqr, etc.
2. 3 or more cons

Answer 1

Try this for the first question.

returns true if it finds 3 consecutive numbers or alphabets in the arg

function check(val){
    for (i = 0; i <= val.length - 3; i++) {
      var s1 = val.charCodeAt(i);
      var s2 = val.charCodeAt(i + 1);
      var s3 = val.charCodeAt(i + 2);
      if (Math.abs(s1 - s2) === 1 && s1 - s2 === s2 - s3) {
        return true;
      }
    }

    return false;
}

console.log(check('Sh1ak@ki1r@100'));