Which event occurs when a user clicks on an HTML element?
Anonymous Quiz
86%
onclick
5%
onmouseover
7%
onkeypress
2%
onhover
How do you find the length of a string str?
Anonymous Quiz
0%
str.size
55%
str.length
14%
str.len
32%
str.length()
Which function pops the last element from an array?
Anonymous Quiz
71%
arr.pop()
20%
arr.push()
2%
arr.shift()
7%
arr.unshift()
What does document.write(Hello) do?
Anonymous Quiz
72%
Writes on HTML page
17%
Writes in console
9%
Shows an alert
2%
Throws an error
🤔5
Which keyword declares a block-scoped variable?
Anonymous Quiz
9%
var
16%
let
4%
const
71%
Both let and const
Which method adds an element to the end of an array?
Anonymous Quiz
56%
push()
35%
pop()
5%
shift()
5%
unshift()
Which method removes the first element from an array?
Anonymous Quiz
9%
push()
26%
pop()
53%
shift()
12%
unshift()
Which event occurs when the user hovers over an element?
Anonymous Quiz
28%
onhover
51%
onmouseover
7%
mousehover
14%
hover
👍1
Which method joins array elements into a string?
Anonymous Quiz
74%
join()
12%
split()
12%
concat()
2%
merge()
How do you remove duplicates from an array?
Anonymous Quiz
51%
arr.filter()
21%
arr.remove()
21%
arr.delete()
7%
arr.uniq()
Which statement correctly accesses an object property using a string key?
Anonymous Quiz
49%
obj.key
42%
obj[key]
2%
obj->key
7%
obj(key)
How do you add an element at the beginning of an array?
Anonymous Quiz
28%
push()
45%
unshift()
19%
shift()
9%
pop()
Which method is used to find an element in an array?
Anonymous Quiz
61%
find()
33%
search()
7%
filter()
How do you convert a number to a string?
Anonymous Quiz
7%
num.toString()
17%
String(num)
11%
parseString(num)
65%
Both A and B
Which method rounds a number to the nearest integer?
Anonymous Quiz
16%
Math.floor()
20%
Math.ceil()
64%
Math.round()
0%
Math.trunc()
How do you create a copy of an array?
Anonymous Quiz
38%
arr.slice()
56%
arr.copy()
2%
arr.clone()
4%
arr.duplicate()
Which of the following creates a private variable in JS class?
Anonymous Quiz
43%
30%
_privateVar
17%
private var
9%
var privateVar