2.0 KiB
2.0 KiB
id | title | localeTitle | challengeType |
---|---|---|---|
bd7123c9c452eddfaeb5bdef | Use Bracket Notation to Find the Nth-to-Last Character in a String | Use la notación de corchete para encontrar el carácter Nth-to-Last en una cadena | 1 |
Description
var firstName = "Charles"
usando firstName[firstName.length - 3]
Instructions
lastName
.
Pista Intenta mirar la declaración de la variable
thirdToLastLetterOfFirstName
si te quedas atascado.
Tests
tests:
- text: <code>secondToLastLetterOfLastName</code> debe ser "c".
testString: 'assert(secondToLastLetterOfLastName === "c", "<code>secondToLastLetterOfLastName</code> should be "c".");'
- text: Tienes que usar <code>.length</code> para obtener la segunda última letra.
testString: 'assert(code.match(/\.length/g).length === 2, "You have to use <code>.length</code> to get the second last letter.");'
Challenge Seed
// Example
var firstName = "Ada";
var thirdToLastLetterOfFirstName = firstName[firstName.length - 3];
// Setup
var lastName = "Lovelace";
// Only change code below this line
var secondToLastLetterOfLastName = lastName;
After Test
console.info('after the test');
Solution
var firstName = "Ada";
var thirdToLastLetterOfFirstName = firstName[firstName.length - 3];
var lastName = "Lovelace";
var secondToLastLetterOfLastName = lastName[lastName.length - 2];