Q431. What are the applications of the seal method?
Below are the main applications of `Object.seal()` method, 1. It is used for sealing objects and arrays. 2. It is used to make properties of an object non-configurable.
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Q432. What are the differences between the freeze and seal methods?
If an object is frozen using the `Object.freeze()` method then its properties become immutable and no changes can be made in them whereas if an object is sealed using the...
Q433. How do you determine if an object is sealed or not?
The `Object.isSealed()` method is used to determine if an object is sealed or not. An object is sealed if all of the below conditions hold true 1. If it is not extensible...
Q434. How do you get enumerable key and value pairs?
The `Object.entries()` method is used to return an array of a given object's own enumerable string-keyed property [key, value] pairs, in the same order as that provided b...
Q435. What is the main difference between Object.values and Object.entries method?
The `Object.values()` method's behavior is similar to `Object.entries()` method but it returns an array of values instead [key,value] pairs. ```javascript const object = ...
Q436. How can you get the list of keys of any object?
You can use the `Object.keys()` method which is used to return an array of a given object's own property names, in the same order as we get with a normal loop. For exampl...
Q437. How do you create an object with a prototype?
The `Object.create()` method is used to create a new object with the specified prototype object and properties. i.e, It uses an existing object as the prototype of the ne...
Q438. What is a WeakSet?
A `WeakSet` is used to store a collection of weakly(weak references) held objects. The syntax would be as follows, ```javascript new WeakSet([iterable]); ``` Let's see th...
Q439. 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...
Q440. 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...