--- id: bd7123c9c452eddfaeb5bdef title: Use Bracket Notation to Find the Nth-to-Last Character in a String challengeType: 1 videoUrl: 'https://scrimba.com/c/cw4vkh9' --- ## Description <section id='description'> You can use the same principle we just used to retrieve the last character in a string to retrieve the Nth-to-last character. For example, you can get the value of the third-to-last letter of the <code>var firstName = "Charles"</code> string by using <code>firstName[firstName.length - 3]</code> </section> ## Instructions <section id='instructions'> Use <dfn>bracket notation</dfn> to find the second-to-last character in the <code>lastName</code> string. <strong>Hint</strong><br>Try looking at the <code>thirdToLastLetterOfFirstName</code> variable declaration if you get stuck. </section> ## Tests <section id='tests'> ```yml tests: - text: <code>secondToLastLetterOfLastName</code> should be "c". testString: assert(secondToLastLetterOfLastName === 'c', '<code>secondToLastLetterOfLastName</code> should be "c".'); - text: You have to use <code>.length</code> to get the second last letter. testString: assert(code.match(/\.length/g).length === 2, 'You have to use <code>.length</code> to get the second last letter.'); ``` </section> ## Challenge Seed <section id='challengeSeed'> <div id='js-seed'> ```js // Example var firstName = "Ada"; var thirdToLastLetterOfFirstName = firstName[firstName.length - 3]; // Setup var lastName = "Lovelace"; // Only change code below this line var secondToLastLetterOfLastName = lastName; ``` </div> ### After Test <div id='js-teardown'> ```js (function(v){return v;})(secondToLastLetterOfLastName); ``` </div> </section> ## Solution <section id='solution'> ```js var firstName = "Ada"; var thirdToLastLetterOfFirstName = firstName[firstName.length - 3]; var lastName = "Lovelace"; var secondToLastLetterOfLastName = lastName[lastName.length - 2]; ``` </section>