Q2141. How do I modify the url without reloading the page?
The `window.location.href` property will be helpful to modify the url but it reloads the page. HTML5 introduced the `history.pushState()` and `history.replaceState()` met...
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Q2142. When and how often does React invoke the setup and cleanup functions inside a useEffect hook?
1. **Setup Function Execution (`useEffect`)** The setup function (or the main function) you pass to `useEffect` runs at specific points: 1. **After the component is mount...
Q2143. What are assignment operators in Python?
python coding interview questions We can combine all arithmetic operators with the assignment symbol. ```python >>> a=7 ``` >>> a+=1 ```python >>> a ``` 8 ```python >>> a...
Q2144. How do you check whether or not an array includes a particular value?
The `Array#includes()` method is used to determine whether an array includes a particular value among its entries by returning either true or false. Let's see an example ...
Q2145. What happens if you return a Promise from useEffect??
You should NOT return a Promise from useEffect. React expects the function passed to useEffect to return either nothing (undefined) or a cleanup function (synchronous fun...
Q2146. Explain logical operators in Python.?
We have three logical operators- and, or, not. ```python >>> False and True ``` False ```python >>> 7>> not 2==2 ``` False
Q2147. How do you compare scalar arrays?
You can use length and every method of arrays to compare two scalars (compared directly using `===`) arrays. The combination of these expressions can give the expected re...
Q2148. Can you have multiple useEffect hooks in a single component?
Yes, multiple useEffect hooks are allowed and recommended when you want to separate concerns. ```jsx useEffect(() => { // Handles API fetch }, []); useEffect(() => { // H...
Q2149. What does the function zip() do?
One of the less common functions with beginners, zip() return s an iterator of tuples. ```python >>> list(zip(['a','b','c'],[1,2,3])) ``` [('a', 1), ('b', 2), ('c', 3)] H...
Q2150. How to get the value from get parameters?
The `new URL()` object accepts the url string and `searchParams` property of this object can be used to access the get parameters. ```javascript let urlString = "http://w...