stringToNumber.js (8kyu 22)

in about Dev on Algorithm

Codewars 알고리즘 풀이


Description

  • We need a function that can transform a string into a number.
    • 문자열을 숫자로 변환한다.



Solution 01

function stringToNumber(str) {
  return +str;
}

stringToNumber('1234');                      // 1234
console.log(typeof stringToNumber('1234'));  // number


Solution 02

function stringToNumber(str) {
  return Number(str);
}

stringToNumber('1234');                      // 1234
console.log(typeof stringToNumber('1234'));  // number


Solution 03

function stringToNumber(str) {
  return parseInt(str);
}

stringToNumber('1234');                      // 1234
console.log(typeof stringToNumber('1234'));  // number


Solution 04

function stringToNumber(str) {
  return str | 0;
}

stringToNumber('1234');                      // 1234
console.log(typeof stringToNumber('1234'));  // number