In this post, we will see how to resolve Deleting everything that is not a number from the array. Why isn’t this working? Question: If I swap the places of the object and the last number output is different. Can ...
In this post, we will see how to resolve How to compare typeof array[] with typeof object{} Question: Hi guys I am trying to solve this problem but can’t figure out how to compare a typeof array which is object ...
In this post, we will see how to resolve How to use typeof in function parameter and force correct variance Question: Lets have simple class hierarchy and the list of instances. I want to filter items from the list of ...
Question: In my particular case: or does it even matter, what’s the difference? Additional Resource: JavaScript-Garden typeof vs instanceof Best Answer: Use instanceof for custom types: Use typeof for simple built in types: Use instanceof for complex built in types: ...
Question: I’ve seen many people use the following code: But I know you could also do this: Or this: Personally, I feel the last one is the cleanest, but is there something I’m missing? Which one is the best to ...
Question: Is there a simple way to determine if a variable is a list, dictionary, or something else? Best Answer: There are two built-in functions that help you identify the type of an object. You can use type() if you ...
Question: My teacher in JavaScript gave me an assignment to master functions. I tried to solve the assignment which requires me to make the output like the second code: The Output Was: I tried so many times, for like 4 ...
Question: I don’t understand why this piece of code works can someone explain to me? If I delete this piece of the conditional && arr[i] the value of arr[5] don’t assume as a falsy value, but if I write that ...
Question: I know this is super basic but I cannot figure out why it is not working. I was expecting to see the element .basic_form logged in the last console.log. Instead I get the following: Any insights would be greatly ...
Question: i have a class named Hacker and i have a class Spy in witch i have to do a method that takes the name(single name) of Hacker class but ass a string “Hacker” do some work and return it ...