CSS Unit 1

What will be the output of the following code snippet?

const obj1 = {first: 20, second: 30, first: 50}; console.log(obj1);

• {first: 20, second: 30}

• {first: 20}

• {first: 20, second: 30, first: 50}

• Syntax Error

What will be the output of the following code snippet?

print(typeof(NaN));

• Object

• Number

• String

• None of the above

What will be the output of the following code snippet?

var a = true + true + true * 3; print(a)

• 3

• 0

• Error

• 5

What will be the output of the following code snippet?

a = [1, 2, 3, 4, 5]; print(a.slice(2, 4));

• 3,4

• 2,3

• 3,4,5

• 2,3,4

What will be the output of the following code snippet?

var a = 1; var b = 0; while (a <= 3) { a++; b += a * 2; print(b); }

• 4 10 18

• 1 2 3

• 1 4 7

• None of the above

Which type of JavaScript language is ___

• 1. Object-Oriented

• 1. Object-Based

• 1. Assembly-language

• 1. High-level

What will be the output of the following JavaScript code?

1. functioncomparison()  

2. {  

3. int number=10;  

4. if(number==="10")  

5. return true;  

6. else  

7. return false;  

8. }  

• true

• false

• error

• none of the above

Which of these symbols is used to create comments in JavaScript?

• / /

• \ \

• \* */

• \* *\

Which of the following statement(s) is true about the JavaScript?

• 1. It is a scripting language used to make the website interactive

• 1. It is an advanced version of Java for Desktop and Mobile application development

• 1. It is a markup language of Java to develop the webpages

• 1. All of the above

Which JavaScript method is used to access an HTML element by id?

• 1. getElementById()

• 1. getElement(id)

• 1. getElementById(id)

• 1. elementById(id)