Q411. What are the differences between WeakSet and Set?
The main difference is that references to objects in `Set` are strong while references to objects in `WeakSet` are weak. i.e, An object in `WeakSet` can be garbage collec...
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Q412. How do you print falsy values in JSX?
The falsy values such as false, null, undefined, and true are valid children but they don't render anything. If you still want to display them then you need to convert it...
Q413. List down the collection of methods available on WeakSet
Below are the list of methods available on `WeakSet`, 1. `add(value)`: A new object is appended with the given value 2. `delete(value)`: Deletes the value from the collec...
Q414. What is the typical use case of portals?
React Portals are primarily used to render UI components such as **modals, tooltips, dropdowns, hovercards, and notifications** outside of their parent component's DOM tr...
Q415. What is a WeakMap?
A `WeakMap` object is a collection of key/value pairs in which the keys are weakly referenced. In this case, keys must be objects and the values can be arbitrary values. ...
Q416. How do you set default value for uncontrolled component?
In React, the value attribute on form elements will override the value in the DOM. With an uncontrolled component, you might want React to specify the initial value, but ...
Q417. What are the differences between WeakMap and Map?
The main difference is that references to key objects in `Map` are strong while references to key objects in `WeakMap` are weak. i.e, A key object in `WeakMap` can be gar...
Q418. What is your favorite React stack?
Even though the tech stack varies from developer to developer, the most popular stack is used in react boilerplate project code. It mainly uses Redux and redux-saga for s...
Q419. List down the collection of methods available on WeakMap
Below are the list of methods available on `WeakMap`, 1. `set(key, value)`: Sets the value for the key in the `WeakMap` object. Returns the `WeakMap` object. 2. `delete(k...
Q420. What is the difference between Real DOM and Virtual DOM?
Below are the main differences between Real DOM and Virtual DOM, | Real DOM | Virtual DOM | | ------------------------------------ | ------------------------------------ ...