NEW - Check out our NEW program SheCodes Bootcamp - and become a developer in just 4 months!
More
Learn more
What is ternary operator in js
The ternary operator, also known as the conditional operator, is a shorthand way of writing an if-else statement in JavaScript. It takes three operands: a condition, a value to return if the condition is true, and a value to return if the condition is false.
Here's an example:
javascript Copy code
let age = 25;
let result = age >= 18 ? "You are an adult" : "You are not an adult";
console.log(result);
In this example, if the age is greater than or equal to 18, the condition age >= 18 evaluates to true, and the ternary operator returns the string "You are an adult". Otherwise, if the condition is false, it returns the string "You are not an adult".
You can read more about the ternary operator in JavaScript here.
in react the simbol "?" what is his meaning
The question mark symbol "?" in React is called the "conditional operator" or "ternary operator". It's a shorthand for an if-else statement. It can be used to render different content based on a condition. Here's an example in JavaScript:
condition ? expressionIfTrue : expressionIfFalse
If the condition is true, the expressionIfTrue is executed, otherwise, the expressionIfFalse is executed.
Here's an example of how it can be used in a React component to render a different message based on a boolean state:
jsx Copy code
function Example({ isLoggedIn }) {
return (
<div>
{isLoggedIn ? <p>Welcome back!</p> : <p>Please log in.</p>}
</div>
);
}
In this example, if the isLoggedIn prop is true, it will render "Welcome back!" message, otherwise, it will render "Please log in." message.
👩💻 the operator "===" diference with "=="
In JavaScript, the operator "===" is called the "strict equality operator", while the operator "==" is called the "loose equality operator".
The difference between the two is that "===" checks for both value and type equality, while "==" only checks for value equality. Here are some examples to illustrate the difference.
javascript Copy code
1 === 1 // true
"1" === 1 // false, because the types are different
"1" == 1 // true, because the values are the same after type coercion
null == undefined // true, because they have the same value after type coercion
null === undefined // false, because the types are different
As you can see, "===" is more strict because it requires both the value and the type to be the same to return true. "==" is less strict because it allows type coercion, which means it can convert one value to another type to compare them.
In general, it's recommended to use "===" to avoid unexpected behavior due to type coercion. However, there might be cases where "==" is useful, such as checking for null or undefined values.
If you have any other questions, you can easily reach out to us here
AI stands for Artificial Intelligence. AI bots are able to learn from conversations with users and expand their knowledge this way.
SheCodes Athena will help you with technical questions about your code using artificial intelligence to find the answer. Imagine a super powerful human who has memorized everything on the internet and can access that knowledge in a matter of seconds. 🤯
SheCodes Athena can answer most coding-related questions, even complicated ones! It can even find bugs in your code and tell you how to fix them in just a few seconds. Impressive, right?
Just remember we're still in testing mode so the AI may return strange or incorrect replies. Feel free to message us if this happens!
SheCodes Athena can only reply to coding-related technical questions. The same type of questions you would ask in the channels on Slack.
For questions that are not coding-related, write us here 😃
You should treat Athena like a SheCodes team member, so always be polite! 😊 Ask your questions as detailed as possible, just like you would do on Slack.
Here are some examples:
- Prettier isn't working on my VS Code. How do I fix this?
- How do I make bullet points with different colors using the list element?
- My code in Codesandbox is having some issues. Can you please tell me what the issue is? [Include the link to your Codesandbox]
For now, SheCodes Athena is limited to 5 questions per day for each student.
In that case, you can either ask SheCodes Athena a follow-up question, or you can post on the designated weekly channel on Slack!
Our technical assistants are still available on Slack and are always happy to help! 😍💪
Remember, questions are limited to 1000 characters.
- If you're working with an HTML file: Post a snippet of your code related to the issue you're having (just copy the code and paste it into the question box).
- If you're working with Codesandbox: Good news, you can just post the link to your Codesandbox and the AI Assistant will be able to view your code.
- If you have a longer question that would require an entire HTML file or more than 1000 characters, post it in the designated weekly channels on Slack! 😃
Athena was the Greek goddess of wisdom, among other elements. She received her name from the city of Athens, which she is known for protecting.
Much like the goddess Athena, SheCodes Athena is also incredibly wise and can solve complicated coding puzzles in a matter of seconds! 😍
Not likely. AI can automate tasks and make developers' jobs more efficient but it can't fully replace the human ability to deal with complex software. And AI will still require human developers to supervise and improve it further.
So developers may see their tasks change but they won't be replaced by AI. 👩💻🤝💻