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Basic Javascript Quiz

Description: Basic Javascript Quiz
Number of Questions: 15
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Tags: javascript

Inside which HTML element do we put the JavaScript?

Answer: 3

What is the correct JavaScript syntax to write "Hello World"?

  1. response.write("Hello World")

  2. document.write("Hello World")

  3. ("Hello World")

  4. echo("Hello World")

Answer: 2

How do you call a function named "myFunction"?

  1. call function myFunction

  2. myFunction()

  3. call myFunction()

Answer: 2

How do you write a conditional statement for executing some statements only if "i" is equal to 5?

  1. if i==5 then

  2. if i=5 then

  3. if (i==5)

  4. if i=5

Answer: 3

How do you write a conditional statement for executing some statements only if "i" is NOT equal to 5?

  1. if (i <> 5)

  2. if (i != 5)

  3. if =! 5 then

  4. if <> 5

Answer: 2

How many different kind of loops are there in JavaScript?

  1. Two. The "for" loop and the "while" loop

  2. Four. The "for" loop, the "while" loop, the "do...while" loop, and the "loop...until" loop

  3. One. The "for" loop

Answer: 1

How does a "for" loop start?

  1. for (i = 0; i <= 5)

  2. for (i = 0; i <= 5; i++)

  3. for i = 1 to 5

  4. for (i <= 5; i++)

Answer: 2

What is the correct way to write a JavaScript array?

  1. var txt = new Array(1:"tim",2:"shaq",3:"kobe")

  2. var txt = new Array="tim","shaq","kobe"

  3. var txt = new Array("tim","shaq","kobe")

Answer: 3

How do you round the number 8.25, to the nearest whole number?

  1. Math.rnd(8.25)

  2. Math.round(8.25)

  3. round(8.25)

  4. rnd(8.25)

Answer: 2

How do you find the largest number of 6 and 8?

  1. Math.max(6,8)

  2. top(6,8)

  3. ceil(6,8)

  4. Math.ceil(6,8)

Answer: 1

You work on a JavaScript project. How do you prompt users with messages and at the same time requesting user inputs?

  1. Alert()

  2. Display()

  3. Prompt()

  4. Confirm()

Answer: 3

Which of the following is the correct syntax of FOR?

  1. for ( increment; initialize; test)

  2. for ( initialize; test), increment

  3. for ( initialize; test; increment)

  4. for ( test; initalize; increment)

Answer: 3

In your JavaScript code, how do you find out which character occurs at the 5th position in a string "How are you"?

  1. Substring()

  2. String()

  3. Stringlength()

  4. CharAt()

Answer: 4

Which of the following do you use for a multi-way branch?

  1. If

  2. Ifthen

  3. Ifelse

  4. switch

  5. for

Answer: 4

You want to design a form validation mechanism. Using string methods, which of the following are the steps involved ?

  1. Check for the presence of certain characters

  2. Check the position of substrings

  3. Test the length of data

  4. Check the variable type of the strings

  5. Either ABC

Answer: 5
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