JavaScript Programming Beginner Quiz 2
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Beginner Quiz 2
1. How do you declare a variable in JavaScript?
var x;
variable x;
int x;
2. Which event occurs when the user clicks on an HTML element?
onmouseover
onclick
onchange
3. Which operator is used to assign a value to a variable?
=
==
===
4. How do you declare a constant in JavaScript?
var
const
let
5. Which of these is NOT a JavaScript data type?
Number
String
Float
6. What is the output of:
console.log(typeof "5")
?
number
string
boolean
7. Which method adds an element to the end of an array?
push()
pop()
shift()
8. Which method removes the last element of an array?
shift()
pop()
unshift()
9. How do you start a for loop in JavaScript?
for i = 1 to 5
for (i <= 5; i++)
for (let i = 0; i < 5; i++)
10. What is the correct way to write an array?
let arr = [1,2,3];
let arr = (1,2,3);
let arr = {1,2,3};
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