I am trying to write a function to get the length of a string without using the .length property nor any loops or built in methods. I am using recursion, however, the stopping statement is not evaluating and causing a stack overflow. I tried console logging string[i] and sure enough, once the length is reached, it console logs "undefined" but the if statement still won't evaluate.
const getLength = (string, i = 0) => {
if (string[i] === 'undefined') return 0;
return 1 + getLength(string, i+1);
}
console.log(getLength("what is going on??")); //18the if-state should be string[i] === undefined
Your test for undefined is not working
You can test for falsy or more detailed
Here is just a falsy one, it will fail on falsy values like 0
const getLength = (string, i = 0) => string[i] ? 1 + getLength(string, i+1) : 0;
console.log(getLength("what is going on??")); //18