Quiz Challenges100

1array compare
2array proto equals array prototype
3array sort comparison
4async await execution order
5async await nexttick promise priority
6car function vs new car console
7comparision of set of object
8copying array
9diffrence between async and promise
10equality and identity operators
11floating point precision
12for in prototype chain enumeration
13function hoisting
14function name expression vs declaration
15iffe hof both
16implicit semicolon insertion
17javascript arrow function this keyword binding
18javascript async await
19javascript async error handling
20javascript async iterators
21javascript blocking event loop
22javascript browser event loop priority
23javascript class arguments
24javascript class hoisting
25javascript closures shared and private state
26javascript clousure
27javascript currying
28javascript debounce
29javascript deep clone
30javascript delete keyword
31javascript diffrence in call and bind
32javascript dynamically typed
33javascript event delegation
34javascript event loop priority
35javascript function arguments
36javascript function as object
37javascript function declarations hoisting
38javascript function expression hoisting
39javascript function parameter
40javascript generators basics
41javascript hoisting problem
42javascript html module script
43javascript iterable property
44javascript map vs object
45javascript memoization
46javascript module default named imports
47javascript module live bindings
48javascript named function expression
49javascript nullish coalescing
50javascript object assign
51javascript object cloning
52javascript object mutation
53javascript optional chaining
54javascript primitive comparision
55javascript primitive
56javascript promise all vs allsettled
57javascript promise race
58javascript prototype inheritance
59javascript proxy basics
60javascript react component imports
61javascript react html jsx module
62javascript reflect basics
63javascript require module cache
64javascript set timeout
65javascript set timeout2
66javascript setimmediate settimeout setinterval
67javascript static method
68javascript symbol basics
69javascript symbol iterator
70javascript tagged templates
71javascript uncaught exception
72javascript weakmap basics
73json clone drops function properties
74let const hoisting
75let hoisting
76node buffer basics
77node cluster basics
78node commonjs vs esm
79node eventemitter order
80node libuv threadpool
81node module resolution
82node streams readable events
83node unhandled rejection
84normal function vs array function constructor
85object Keys object values
86object destructuring 2
87object destructuring
88object property equality
89object property mutation
90object prototype vs proto
91object spread reference
92post pre operators 1
93post pre operators 2
94promise all
95prototype method added after instance creation
96prototype property shadowing
97set timeout 2
98static method inheritance and this
99this keyword
100unary plus operators

Question 75 of 10075%

75

What will the following JavaScript code output?

console.log(foo);
let foo = "bar";

A

TypeError

B

ReferenceError

C

null

D

undefined

75/100