Check if a string of parenthesis has balanced parenthesis

CheckBalancedParenthesis.js

const parenthesis = {
  brace: ['(', ')'],
  square: ['[', ']'],
  curly: ['{', '}']
};

const parensKeys = Object.keys(parenthesis);

const isOpenParenthesis = (p) => {
  for (let i = 0; i < parensKeys.length; i++) {
    if (p === parenthesis[`${parensKeys[i]}`][0]) {
      return true;
    }
  }
  
  return false;
}

const parenthesisMatch = (closedParenthesis, openParenthesis) => {
  for (let i = 0; i < parensKeys.length; i++) {
    if (openParenthesis === parenthesis[`${parensKeys[i]}`][0] && closedParenthesis === parenthesis[`${parensKeys[i]}`][1]) {
      return true;
    }
  }
  
  return false;
}
const isParenthesisBalanced = (str) => {
  const strArr = str.split('');
  const parenStack = [];
  
  for (let i = 0; i < strArr.length; i++) {
    const s = strArr[i];
    if (isOpenParenthesis(s)) parenStack.push(s);
    else if (parenStack.length === 0 || !parenthesisMatch(s, parenStack.pop())) return false;
  }
  
  return parenStack.length === 0;
}