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2. Declare a function ‘stringsinjava’ in JavaScript to accept two string arguments. The function should
Convert both the strings to uppercase.
Search for string1 in string2 and display the string if found.
Replace all occurrences of letter ‘A’ with ‘*’ in string1.
Display first character of string2.
D. Assertion and Reasoning questions.
Direction: Questions 1-2, consist of two statements – Assertion (A) and Reasoning (R). Answer these questions by
selecting the appropriate option given below:
a. Both A and R are true and R is the correct explanation of A.
b. Both A and R are true but R is not the correct explanation of A.
c. A is true but R is false.
d. A is false but R is true.
1. Assertion (A): In JavaScript, typeof(null) returns "object".
Reason (R): null is considered an object in JavaScript due to a long-standing bug in the language.
2. Assertion (A): The slice() method modifies the original array.
Reason (R): slice() creates a new shallow copy of the array, not affecting the original one.
E. Statement-based questions.
Two statements are given. Statement 1 and Statement 2. Examine the statements and answer the question according
to the instructions given below:
a. Statement 1 is True, Statement 2 is True
b. Statement 1 is False, Statement 2 is False
c. Statement 1 is True, Statement 2 is False
d. Statement 1 is False, Statement 2 is True
1. Statement 1: The onload event triggers when a webpage finishes loading.
Statement 2: The onchange event fires immediately when a user types something into an input box.
2. Statement 1: Arithmetic operators in JavaScript only work with numbers.
Statement 2: The + operator can also concatenate strings in JavaScript.
LAB ACTIVITY 21 st Century #Creativity
#Technology Literacy
Skills
1. Revise entire JavaScript by watching the video – JavaScript Programming - Full Course (8 hour
duration) - https://www.youtube.com/watch?v=jS4aFq5-91M
2. Write code for OK button to find the length of the string entered in a textbox on the webpage.
3. Write a code in JavaScript to accept a number from the user and generate
a. a random number greater than the number entered.
b. next even number after the number entered. [CBSE PAPER 2020]
4. Write a function that displays a prompt box which accepts a name and displays a greeting “Happy New
Year! <name>” in a paragraph which has an id “para1”.
5. Create a simple game in JavaScript! Watch the video – The Easiest JavaScript Game Ever
https://www.youtube.com/watch?v=bG2BmmYr9NQ
6. Create a Quiz by watching the video – How to create a Simple Quiz Using Html JavaScript
https://www.youtube.com/watch?v=rCVqQ8NKU2M
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