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Which method is used to check if a specific element exists in a Set?
In JavaScript, the method used to check if a specific element exists in a Set is the has() method.
Here is an example of how to use the has() method:
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const mySet = new Set(['apple', 'banana', 'orange']);
console.log(mySet.has('banana')); // Output: true
console.log(mySet.has('grape')); // Output: false
The has() method returns a boolean value (true or false) depending on whether the element exists in the Set or not.
create an array that compares two arrays and deletes their duplicates
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const array1 = [1, 2, 3, 4, 5];
const array2 = [3, 4, 5, 6, 7];
const noDups = [...new Set([...array1, ...array2])];
console.log(noDups); // [1, 2, 3, 4, 5, 6, 7]
how to create a new array that deletes duplicates
In many programming languages, you can create a new array that deletes duplicates by using the Array.from(new Set(originalArray)) syntax, where originalArray is the existing array you want to modify.
For example, if you have the following array const originalArray = [1,1,2,3,4,4], you can create a new array that deletes duplicates with the following code:
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// Create a Set
const distinctArray = new Set(originalArray)
// Create a new array with only distinct elements
const resultArray = Array.from(distinctArray)
The new array resultArray will contain the distinct values of originalArray: [1,2,3,4].
How to use cookies in javascript?
Cookies can be used in JavaScript to store user information. To use them, you'll first have to create the cookie on the server side and then use the JavaScript document.cookie property to get, set, and delete the cookie.
To set a cookie in JavaScript, you can use the document.cookie property like this:
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document.cookie = "name=value;expires=date";
To get the cookie, use the following code:
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var name = document.cookie.split('=')[0];
To delete the cookie, use the following code:
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document.cookie = "name=; expires=Thu, 01 Jan 1970 00:00:00 UTC";
For more information on how to use cookies in JavaScript, check out this tutorial.
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. π€―
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!
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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!
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Remember, questions are limited to 1000 characters.
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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. π©βπ»π€π»