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";
}