Q11. What is a spread operator?
Spread operator allows iterables( arrays / objects / strings ) to be expanded into single arguments/elements. Let's take an example to see this behavior, ```javascript fu...
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Q12. 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.
Q13. What is the purpose of compareFunction while sorting arrays?
The compareFunction is used to define the sort order. If omitted, the array elements are converted to strings, then sorted according to each character's Unicode code poin...
Q14. What is the comma operator?
The comma operator is used to evaluate each of its operands from left to right and returns the value of the last operand. This is totally different from comma usage withi...
Q15. 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...
Q16. What is destructuring assignment?
The destructuring assignment is a JavaScript expression that makes it possible to unpack values from arrays or properties from objects into distinct variables. Let's get ...
Q17. What are default values in destructuring assignment?
A variable can be assigned a default value when the value unpacked from the array or object is undefined during destructuring assignment. It helps to avoid setting defaul...
Q18. What are typed arrays?
Typed arrays are array-like objects from ECMAScript 6 API for handling binary data. JavaScript provides 12 Typed array types, 1. Int8Array: An array of 8-bit signed integ...
Q19. What is for...of statement?
The for...of statement creates a loop iterating over iterable objects or elements such as built-in String, Array, Array-like objects (like arguments or NodeList), TypedAr...
Q20. What is the purpose of some method in arrays?
The some() method is used to test whether at least one element in the array passes the test implemented by the provided function. The method returns a boolean value. Let'...