convert_string_to_a_number.js

/*
https://www.codewars.com/kata/544675c6f971f7399a000e79/train/javascript

Note: This kata is inspired by Convert a Number to a String!. Try that one too.

Description
We need a function that can transform a string into a number. What ways of achieving this do you know?

Note: Don't worry, all inputs will be strings, and every string is a perfectly valid representation of an integral number.

Examples
stringToNumber("1234") == 1234
stringToNumber("605" ) == 605
stringToNumber("1405") == 1405
stringToNumber("-7"  ) == -7
*/

// First Attempt

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

// Second Attempt

var stringToNumber = function(str) {
	return eval(str);
};