* fix: move "Explore Differences Between..." to basic JS, update seed and tests * fix: resequence "Declare String Variables" * fix: move "Declare a Read-Only Variable..." to basic JS, update seed and tests * fix: revert changes to non-English "Explore Differences Between..." test text * fix: revert test strings, solutions, and seeds for non-English challenges * fix: update "Declare String Variables" description * fix: sync quotation marks in description and seed * fix: modify note in "Declare a Read-Only..." challenge * fix: update operator and compound assignment challenges * fix: update string challenges * fix: update array and array method challenges * fix: update function and scope challenges, resequence slightly * fix: "Word Blanks" solution * fix: add spacing to seed * fix: concatenating += challenge spacing * fix: appending variables to strings spacing * fix: find the length of a string spacing * fix: removed instances of removedFromMyArray = 0 * fix: switch challenges * fix: function argument and param spacing * fix: update counting cards, object challenges, and record collection * fix: finish rest of Basic JS section * fix: introducing else statements solution * fix: update spacing and wording * fix: update wording for const challenge * fix: update functional programming challenges * fix: intermediate algorithms and cert challenges * fix: revert some spacing and remove comments for fp challenge solutions * feat: add notes with links to moved let and const challenges in first two es6 challenges * fix: update es6 intro text * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/concatenating-strings-with-the-plus-equals-operator.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/finding-a-remainder-in-javascript.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/global-scope-and-functions.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-through-an-array-with-a-for-loop.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-through-an-array-with-a-for-loop.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/implement-map-on-a-prototype.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/declare-a-read-only-variable-with-the-const-keyword.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * fix: concatenating strings with plus operator seed * fix: add comments back to Declare a Read-Only Variable... seed * feat: add es6 to basic javascript redirect tests for let and const challenges * fix: revert "Concatenating Strings with Plus Operator" seed * fix: move test file to cypress/integration/learn/redirects, separate redirect tests Co-authored-by: Shaun Hamilton <shauhami020@gmail.com>
2.4 KiB
id, title, challengeType, videoUrl, forumTopicId, dashedName
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";
}