Why zero ?

Question

That's a code i sound of FreeCodeCamp to print out the length of a string, but why did they assign the value of "firstNameLength " to zero ?
here's the code:

var firstNameLength = 0;
var firstName = "Ada";

firstNameLength = firstName.length;

Answer 1

Normally you dont have to initialize variabiles in Java Script. But could be a good practice derived from languages like Java.

Answer 2

That's hard to say without the context. Can you upload more of the code and link it here?

Answer 3

HonFu here's the lesson
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/use-bracket-notation-to-find-the-first-character-in-a-string