Tag: javascript

Questions Related to javascript

Inside which HTML element do we put the JavaScript?

javascript
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Correct Option: C
Explanation:

To include JavaScript code in an HTML document, we use the element. Therefore, the correct answer is:

The Answer is: C. <script>

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

  1. response.write("Hello World")

  2. document.write("Hello World")

  3. ("Hello World")

  4. echo("Hello World")

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Correct Option: B

How do you call a function named "myFunction"?
javascript

  1. call function myFunction

  2. myFunction()

  3. call myFunction()

Show answer
Correct Option: B
Explanation:

To call a function named "myFunction", the user needs to use the following syntax: 

myFunction();

Option A is incorrect because it is not the correct syntax for calling a function.

Option B is the correct answer because it calls the function "myFunction" using the proper syntax.

Option C is incorrect because it includes the word "call", which is not necessary when calling a function in most programming languages.

Therefore, the answer is: B. myFunction()

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

javascript

  1. if i==5 then

  2. if i=5 then

  3. if (i==5)

  4. if i=5

Show answer
Correct Option: C
Explanation:

To write a conditional statement for executing some statements only if "i" is equal to 5, you need to use the correct syntax.

The correct syntax for a conditional statement in most programming languages is: 

if (condition) {
    // statements to be executed if the condition is true
}

Now let's analyze each option and determine if it is the correct way to write the conditional statement:

A. if i==5 then - This option is incorrect because the syntax is incorrect. The correct syntax for the condition should be enclosed in parentheses, like if (i == 5).

B. if i=5 then - This option is incorrect because the syntax is incorrect. To check for equality, you need to use a double equals sign (==) instead of a single equals sign.

C. if (i==5) - This option is correct. It uses the correct syntax for a conditional statement. The condition i == 5 checks if the variable i is equal to 5.

D. if i=5 - This option is incorrect because the syntax is incorrect. To check for equality, you need to use a double equals sign (==) instead of a single equals sign.

Therefore, the correct option is:

The Answer is: C. if (i==5)

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

javascript

  1. if (i <> 5)

  2. if (i != 5)

  3. if =! 5 then

  4. if <> 5

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Correct Option: B

How many different kind of loops are there in JavaScript?

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

Show answer
Correct Option: A

AI Explanation

To answer this question, you need to understand the different types of loops in JavaScript.

Let's go through each option to understand why it is correct or incorrect:

Option A) Two. The "for" loop and the "while" loop - This option is incorrect because there are more than two types of loops in JavaScript.

Option B) Four. The "for" loop, the "while" loop, the "do...while" loop, and the "loop...until" loop - This option is incorrect because there is no "loop...until" loop in JavaScript. The correct options are the "for" loop and the "while" loop.

Option C) One. The "for" loop - This option is incorrect because there is more than one type of loop in JavaScript.

The correct answer is A) Two. The "for" loop and the "while" loop. These are the two basic types of loops in JavaScript that allow you to repeat a block of code multiple times.

How does a "for" loop start?
javascript

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

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

  3. for i = 1 to 5

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

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Correct Option: B

What is the correct way to write a JavaScript array?
javascript

  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")

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Correct Option: C

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

javascript

  1. Math.rnd(8.25)

  2. Math.round(8.25)

  3. round(8.25)

  4. rnd(8.25)

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Correct Option: B

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

javascript

  1. Math.max(6,8)

  2. top(6,8)

  3. ceil(6,8)

  4. Math.ceil(6,8)

Show answer
Correct Option: A