Q2161. How many types of objects does Python support?
Immutable objects- Those which do not let us modify their contents. Examples of these will be tuples, booleans, strings, integers, floats, and complexes. Iterations on su...
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Q2162. How do you declare a namespace?
Even though JavaScript lacks namespaces, we can use Objects, an IIFE (Immediately Invoked Function Expression) or `let`/`const` to create namespaces. 1. **Using Object Li...
Q2163. How does useLayoutEffect cause layout thrashing?
The `useLayoutEffect` can **cause layout thrashing** when you **repeatedly read and write to the DOM** in ways that force the browser to recalculate layout multiple times...
Q2164. When is the else part of a try-except block executed?
In an if-else block, the else part is executed when the condition in the if-statement is False. But with a try-except block, the else part executes only if no exception i...
Q2165. How do you invoke javascript code in an iframe from the parent page?
Initially iFrame needs to be accessed using either `document.getElementBy` or `window.frames`. After that `contentWindow` property of iFrame gives the access for targetFu...
Q2166. How Do You Use useRef to Access a DOM Element in React? Give an example.
The `useRef` hook is commonly used in React to directly reference and interact with DOM elements — like focusing an input, scrolling to a section, or controlling media el...
Q2167. Explain join() and split() in Python?
1)join() lets us join characters from a string together by a character we specify. ```python >>> ','.join('12345') ``` '1,2,3,4,5' 2) split() lets us split a string aroun...
Q2168. How do you get the timezone offset of a date object?
You can use the `getTimezoneOffset` method of the date object. This method returns the time zone difference, in minutes, from current locale (host system settings) to UTC...
Q2169. Can you use useRef to persist values across renders??
Yes, you can use `useRef` to persist values across renders in React. Unlike `useState`, changing `.current` does not cause re-renders, but the value is preserved across r...
Q2170. Explain a few methods to implement Functionally Oriented Programming in Python?
Sometimes, when we want to iterate over a list, a few methods come in handy. a. filter() Filter lets us filter in some values based on conditional logic. ```python >>> li...