freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/comparisons-with-the-logical-or-operator.english.md

id	title	challengeType	videoUrl	forumTopicId
56533eb9ac21ba0edf2244d9	Comparisons with the Logical Or Operator	1	https://scrimba.com/c/cEPrGTN	16800

Description

The logical or operator (||) returns true if either of the operands is true. Otherwise, it returns false. The logical or operator is composed of two pipe symbols (|). This can typically be found between your Backspace and Enter keys. The pattern below should look familiar from prior waypoints:

if (num > 10) {
  return "No";
}
if (num < 5) {
  return "No";
}
return "Yes";

will return "Yes" only if num is between 5 and 10 (5 and 10 included). The same logic can be written as:

if (num > 10 || num < 5) {
  return "No";
}
return "Yes";

Instructions

Combine the two if statements into one statement which returns "Outside" if val is not between 10 and 20, inclusive. Otherwise, return "Inside".

Tests

tests:
  - text: You should use the <code>||</code> operator once
    testString: assert(code.match(/\|\|/g).length === 1);
  - text: You should only have one <code>if</code> statement
    testString: assert(code.match(/if/g).length === 1);
  - text: <code>testLogicalOr(0)</code> should return "Outside"
    testString: assert(testLogicalOr(0) === "Outside");
  - text: <code>testLogicalOr(9)</code> should return "Outside"
    testString: assert(testLogicalOr(9) === "Outside");
  - text: <code>testLogicalOr(10)</code> should return "Inside"
    testString: assert(testLogicalOr(10) === "Inside");
  - text: <code>testLogicalOr(15)</code> should return "Inside"
    testString: assert(testLogicalOr(15) === "Inside");
  - text: <code>testLogicalOr(19)</code> should return "Inside"
    testString: assert(testLogicalOr(19) === "Inside");
  - text: <code>testLogicalOr(20)</code> should return "Inside"
    testString: assert(testLogicalOr(20) === "Inside");
  - text: <code>testLogicalOr(21)</code> should return "Outside"
    testString: assert(testLogicalOr(21) === "Outside");
  - text: <code>testLogicalOr(25)</code> should return "Outside"
    testString: assert(testLogicalOr(25) === "Outside");

Challenge Seed

function testLogicalOr(val) {
  // Only change code below this line

  if (val) {
    return "Outside";
  }

  if (val) {
    return "Outside";
  }

  // Only change code above this line
  return "Inside";
}

// Change this value to test
testLogicalOr(15);

Solution

function testLogicalOr(val) {
  if (val < 10 || val > 20) {
    return "Outside";
  }
  return "Inside";
}