Q1981. What is prop drilling?
Prop Drilling is the process by which you pass data from one component of the React Component tree to another by going through other components that do not need the data ...
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Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (2,728 available).
Q1982. Why the component data must be a function?
The component data must be a function instead directly providing the object. This is because each instance needs to maintain an independent copy of the returned data obje...
Q1983. How Do You Read From A Dictionary In Python?
To fetch data from a dictionary, we can directly access using the keys. We can enclose a "key" using brackets […] after mentioning the variable name corresponding to the ...
Q1984. What is the event loop?
The event loop is a process that continuously monitors both the call stack and the event queue and checks whether or not the call stack is empty. If the call stack is emp...
Q1985. What is the difference between useState and useRef hook?
1. useState causes components to re-render after state updates whereas useRef doesn’t cause a component to re-render when the value or state changes. Essentially, useRef ...
Q1986. What is the reason for recommendation for multi-word component names?
Component names should always be multi-word, except for root level or built-in vue components(such as `` or `` etc). This recommendation is to prevent conflicts with exis...
Q1987. How Do You Traverse Through A Dictionary Object In Python?
We can use the "for" and "in" loop for traversing the dictionary object. ```python >>> site_stats = {'site': 'tecbeamers.com', 'traffic': 10000, "type": "organic"} ``` >>...
Q1988. What is the call stack?
Call Stack is a data structure for javascript interpreters to keep track of function calls(creates execution context) in the program. It has two major actions, 1. Wheneve...
Q1989. What is a wrapper component?
A wrapper in React is a component that wraps or surrounds another component or group of components. It can be used for a variety of purposes such as adding additional fun...
Q1990. What is the best way to re-render a component?
The best way to force Vue to re-render a component is to set a `:key` on the component. i.e, Whenever the component to be re-rendered, just change the value of the key th...