freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-an.../basic-javascript/use-conditional-logic-with-...

2.4 KiB

id title challengeType videoUrl forumTopicId dashedName
cf1111c1c12feddfaeb3bdef Use Conditional Logic with If Statements 1 https://scrimba.com/c/cy87mf3 18348 use-conditional-logic-with-if-statements

--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);
test(false);

test(true) returns the string It was true, and test(false) returns the string 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.

--hints--

trueOrFalse should be a function

assert(typeof trueOrFalse === 'function');

trueOrFalse(true) should return a string

assert(typeof trueOrFalse(true) === 'string');

trueOrFalse(false) should return a string

assert(typeof trueOrFalse(false) === 'string');

trueOrFalse(true) should return the string Yes, that was true

assert(trueOrFalse(true) === 'Yes, that was true');

trueOrFalse(false) should return the string No, that was false

assert(trueOrFalse(false) === 'No, that was false');

--seed--

--seed-contents--

function trueOrFalse(wasThatTrue) {
  // Only change code below this line



  // Only change code above this line

}

--solutions--

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