Validate title function

Question

Write a title validation function - validateTitle, which takes an argument and validates it by the rules:

• Title length must be less than 2 characters but less than 20.

• Title must start with an uppercase letter

• Function should return ‘VALID’ if the string meets the requirements or ‘INVALID’ if it does not. And return 'Incorrect input data' if the given argument not a string. Do not use regular expressions. My solution is not full

    const validateTitle = (value) => {
    if (typeof value !== "string") {
      return "Incorrect input data";
    }
    for (let i = 2; i <= 19; i++) {}
  };
  

  Examples: validateTitle(false) // 'Incorrect input data' validateTitle([]) // 'Incorrect input data' validateTitle('s') // 'INVALID validateTitle('12title') // 'INVALID' validateTitle('Title!') // 'VALID' validateTitle('Title?') // 'VALID'

Answer 1

function validTitle(tempString){
 let validFlag = ((tempString.charAt(0) == tempString.charAt(0).toUpperCase()) && 
                 (tempString.length > 2 && tempString.length < 20 )) ? true : false;
  return validFlag ? 'VALID' : 'INVALID'
}

try this -