JavaScript Fundamentals

Quiz
•
Computers
•
8th Grade
•
Hard
harshit shukla
Used 6+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is not a valid primitive data type in JavaScript?
Number
String
Object
Boolean
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the correct way to declare an empty array in JavaScript?
var myArray = {};
var myArray = [];
var myArray = new Array();
Both b and c are correct
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the output of the following code?
function greet(name) {
console.log("Hello, " + name + "!");
}
greet("Alice");
Hello, Alice!
function greet(name) {...}
undefined
Error
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which method is used to access a specific element in an array by its index?
getElementsByIndex
getElementAt
charAt ✅
None of the above
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How would you retrieve a reference to an HTML element with the ID "myElement" using JavaScript?
document.getElementByID("myElement");
document.getElementById("myElement");
document.querySelectorAll("#myElement");
document.getElementsByClassName("myElement");
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the difference between .innerHTML and .innerText?
.innerHTML includes HTML tags, while .innerText does not
.innerText includes HTML tags, while .innerHTML does not
There is no difference between them
.innerHTML is used for setting content, while .innerText is used for getting content
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which method is used to get the value of an attribute of an HTML element?
getAttribute()
getElementAttribute()
getAttributeValue()
None of the above
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