freeCodeCamp

2.8 KiB

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id	title	challengeType
5c3dda8b4d8df89bea71600f	Check For Mixed Grouping of Characters	1

Description

Sometimes we want to check for groups of characters using a Regular Expression and to achieve that we use parentheses (). If you want to find either Penguin or Pumpkin in a string, you can use the following Regular Expression: /P(engu|umpk)in/g Then check whether the desired string groups are in the test string by using the test() method.

let testStr = "Pumpkin";
let testRegex = /P(engu|umpk)in/g;
testRegex.test(testStr);
// Returns true

Instructions

Fix the regex so that it checks for the names of Franklin Roosevelt or Eleanor Roosevelt in a case sensitive manner and it should make concessions for middle names. Then fix the code so that the regex that you have created is checked against myString and either true or false is returned depending on whether the regex matches.

Tests

tests:
  - text: Your regex <code>myRegex</code> should return <code>true</code> for the string <code>Franklin D. Roosevelt</code>
    testString: assert(myRegex.test('Franklin D. Roosevelt'), 'Your regex <code>myRegex</code> should return <code>true</code> for the string <code>Franklin D. Roosevelt</code>');
  - text: Your regex <code>myRegex</code> should return <code>true</code> for the string <code>Eleanor Roosevelt</code>
    testString: assert(myRegex.test('Eleanor Roosevelt'), 'Your regex <code>myRegex</code> should return <code>true</code> for the string <code>Eleanor Roosevelt</code>');
  - text: Your regex <code>myRegex</code> should return <code>false</code> for the string <code>Franklin Rosevelt</code>
    testString: assert(!myRegex.test('Franklin Rosevelt'), 'Your regex <code>myRegex</code> should return <code>false</code> for the string <code>Franklin Rosevelt</code>');
  - text: You should use <code>.test()</code> to test the regex.
    testString: assert(code.match(/myRegex.test\(\s*myString\s*\)/), 'You should use <code>.test()</code> to test the regex.');
  - text: Your result should return <code>true</code>.
    testString: assert(result === true, 'Your result should return <code>true</code>.');

Challenge Seed

let myString = "Eleanor Roosevelt";
let myRegex = /False/; // Change this line
let result = false; // Change this line
// After passing the challenge experiment with myString and see how the grouping works

Solution

let myString = "Eleanor Roosevelt";
let myRegex = /(Franklin|Eleanor).*Roosevelt/;
let result = myRegex.test(myString);

2.8 KiB Raw Blame History