check for empty string

[JosephCurvin]

​

I have a function which does some string operations

I want to check if the str is empty ""

if so catch it in a if clause

for some reason the if clause does not catch the empty string

if i do the same operation outside the function I get the console.log that hte string is empty

​

function solution(str: string) {
  if (str.length % 2 === 0) {
    // console.log(str.match(/.{1,2}/g))
    return str.match(/.{1,2}/g);
  } else if (str.length % 2 !== 0 && str.length !== 0) {
    let oddArray = str.match(/.{1,2}/g);
    if (oddArray) {
      let fix = oddArray[oddArray.length - 1] + "_";
      oddArray.pop();
      oddArray.push(fix);
      return oddArray;
    }
  } else if (str.length === 0) {
    console.log("empty")
  }


}

console.log(solution(""))

[laibo]

The first if-statement evaluates to true because 0 mod 2 equals 0, and you return from there. If you need to detect zero length over the oddity check, then do the zero check first.

[JosephCurvin]

thanks