freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/comparison-with-the-less-than-operator.english.md

id, title, challengeType

id	title	challengeType
56533eb9ac21ba0edf2244d6	Comparison with the Less Than Operator	1

Description

The less than operator (<) compares the values of two numbers. If the number to the left is less than the number to the right, it returns true. Otherwise, it returns false. Like the equality operator, less than operator converts data types while comparing. Examples

2 < 5 // true
'3' < 7 // true
5 < 5 // false
3 < 2 // false
'8' < 4 // false

Instructions

Add the less than operator to the indicated lines so that the return statements make sense.

Tests

tests:
  - text: <code>testLessThan(0)</code> should return "Under 25"
    testString: 'assert(testLessThan(0) === "Under 25", ''<code>testLessThan(0)</code> should return "Under 25"'');'
  - text: <code>testLessThan(24)</code> should return "Under 25"
    testString: 'assert(testLessThan(24) === "Under 25", ''<code>testLessThan(24)</code> should return "Under 25"'');'
  - text: <code>testLessThan(25)</code> should return "Under 55"
    testString: 'assert(testLessThan(25) === "Under 55", ''<code>testLessThan(25)</code> should return "Under 55"'');'
  - text: <code>testLessThan(54)</code> should return "Under 55"
    testString: 'assert(testLessThan(54) === "Under 55", ''<code>testLessThan(54)</code> should return "Under 55"'');'
  - text: <code>testLessThan(55)</code> should return "55 or Over"
    testString: 'assert(testLessThan(55) === "55 or Over", ''<code>testLessThan(55)</code> should return "55 or Over"'');'
  - text: <code>testLessThan(99)</code> should return "55 or Over"
    testString: 'assert(testLessThan(99) === "55 or Over", ''<code>testLessThan(99)</code> should return "55 or Over"'');'
  - text: You should use the <code>&lt;</code> operator at least twice
    testString: 'assert(code.match(/val\s*<\s*(''|")*\d+(''|")*/g).length > 1, ''You should use the <code>&lt;</code> operator at least twice'');'

Challenge Seed

function testLessThan(val) {
  if (val) {  // Change this line
    return "Under 25";
  }
  
  if (val) {  // Change this line
    return "Under 55";
  }

  return "55 or Over";
}

// Change this value to test
testLessThan(10);

Solution

function testLessThan(val) {
  if (val < 25) {  // Change this line
    return "Under 25";
  }
  
  if (val < 55) {  // Change this line
    return "Under 55";
  }

  return "55 or Over";
}