freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/use-conditional-logic-with-if-statements.english.md

id	title	challengeType	videoUrl	forumTopicId
cf1111c1c12feddfaeb3bdef	Use Conditional Logic with If Statements	1	https://scrimba.com/c/cy87mf3	18348

Description

If statements are used to make decisions in code. The keyword if tells JavaScript to execute the code in the curly braces under certain conditions, defined in the parentheses. These conditions are known as Boolean conditions and they may only be true or false. When the condition evaluates to true, the program executes the statement inside the curly braces. When the Boolean condition evaluates to false, the statement inside the curly braces will not execute. Pseudocode

if (condition is true) {
  statement is executed
}

Example

function test (myCondition) {
  if (myCondition) {
     return "It was true";
  }
  return "It was false";
}
test(true);  // returns "It was true"
test(false); // returns "It was false"

When test is called with a value of true, the if statement evaluates myCondition to see if it is true or not. Since it is true, the function returns "It was true". When we call test with a value of false, myCondition is not true and the statement in the curly braces is not executed and the function returns "It was false".

Instructions

Create an if statement inside the function to return "Yes, that was true" if the parameter wasThatTrue is true and return "No, that was false" otherwise.

Tests

tests:
  - text: <code>trueOrFalse</code> should be a function
    testString: assert(typeof trueOrFalse === "function");
  - text: <code>trueOrFalse(true)</code> should return a string
    testString: assert(typeof trueOrFalse(true) === "string");
  - text: <code>trueOrFalse(false)</code> should return a string
    testString: assert(typeof trueOrFalse(false) === "string");
  - text: <code>trueOrFalse(true)</code> should return "Yes, that was true"
    testString: assert(trueOrFalse(true) === "Yes, that was true");
  - text: <code>trueOrFalse(false)</code> should return "No, that was false"
    testString: assert(trueOrFalse(false) === "No, that was false");

Challenge Seed

// Example
function ourTrueOrFalse(isItTrue) {
  if (isItTrue) {
    return "Yes, it's true";
  }
  return "No, it's false";
}

// Setup
function trueOrFalse(wasThatTrue) {

  // Only change code below this line.



  // Only change code above this line.

}

// Change this value to test
trueOrFalse(true);

Solution

function trueOrFalse(wasThatTrue) {
  if (wasThatTrue) {
    return "Yes, that was true";
  }
  return "No, that was false";
}