check input validation [Javascript]

Question

I was woking on a problem and got stuck and how I should validate a given string input. Here is the original question

I think my approach is ok but I'm stuck on what to do now.

here is my attempt so far:

const solution =(S)=>{
 let validParams = {
   '--count': '--count',
   '--name': '--name',
   '--help': '--help'
 }

let strToTest;
for(k of validParams){

  switch (S.includes(k)) {
    case '--help':
    return 1
    case '--count':
     strToTest = parseInt(S.replace(/--count/g,''))
      return countValidator(strToTest);
    case '--name':
    strToTest = S.replace(/--count/g,'')
      return nameValidator(strToTest);
    default:
      return 1
  }
}
}

const countValidator = (num) =>{
  if(num > 10 && num < 100){
    return 0
  }
}

const nameValidator = (str) =>{
  if(str.length > 3 && str.length < 10){
    return 0
  }
}

Here the test cases I saw as well:

solution('--count g') // -1
solution('-help name') // -1
solution('--name SOME_NAME --COUNT 10') // 0
solution('--count 44') // 0

Answer 1

You need to split the input into words first, then test the array elements.

You can't return the result of a validator immediately if it succeeds, since you have to keep testing other parameters.

 function solution(S) { let params = S.split(/\\s+/).map(str => str.toLowerCase()); // \\s+ matches any amount of whitespace between parameters let result = 0; if (params.includes('--help')) { result = 1; } for (let i = 0; i < params.length; i++) { switch (params[i]) { case "--help": break; case "--count": i++; if (i > params.length) { result--; return result; } let n = parseInt(params[i]); if (isNaN(n) || n < 10 || n > 100) { result--; return result; } break; case "--name": i++; if (i > params.length) { result--; return result; } let str = params[i]; if (str.length < 3 || str.length > 10) { result--; return result; } break; default: result--; return result; } } return result; } console.log(solution('--count g')); // -1 console.log(solution('-help name')); // -1 console.log(solution('--name SOME_NAME --COUNT 10')); // 0 console.log(solution('--count 44')) // 0