1500+ Javascript Questions - Set 134 [With Solutions]

Javascript Questions Set 134:

Quiz Mode

Javascript Questions

Set 134/144

Which is a client-side JS object?

Client

Cursor

FileUpload

Database

What is the output of the following script?

20*5

5*20

100

None of these

The URL property belongs to which of the following objects?

Document

Element

Location

Event

What are the parameters of a Promise?

repeat, revenue

reject, revenue

None of these

resolve, reject

Which jQuery method is used to execute a function after clicking a button?

confirm()

alert()

hide()

click()

The argument that can be passed to the `reject()` and `resolve()` methods of a Promise is:

string only

object only

anything

None of the above

What does the time it takes for a web page to become usable depend on?

Runtime performance

Web performance

Speed

Runtime performance and speed

Which method is used to create a new HTML element in JavaScript?

There is no method to create a new HTML element.

createTextNode()

createElement()

appendChild()

`<!DOCTYPE html>`

`<html>`

`<head>`

`<title>abekus</title>`

`</head>`

`<body>`

`<p id="demo"></p>`

`<script>`

`var x = "30" + 15 + 20;`

`document.getElementById("demo").innerHTML = x;`

`typeof(x);`

`</script>`

`</body>`

`</html>`

Error

3035

301520

Do derived class constructors have a predefined this keyword?

No, they can never have any kind of this keyword in them

Yes, they can use it by calling super() within the constructor of the base class

None of these

Yes, they have a predefined constructor of their own

Quiz Mode

Qn. Sets

Javascript Questions Set 134:

Javascript Questions

Which is a client-side JS object?

Reveal Answer

Reveal Answer

What is the output of the following script?

Reveal Answer

Reveal Answer

The URL property belongs to which of the following objects?

Reveal Answer

Reveal Answer

What are the parameters of a Promise?

Reveal Answer

Reveal Answer

Which jQuery method is used to execute a function after clicking a button?

Reveal Answer

Reveal Answer

The argument that can be passed to the reject() and resolve() methods of a Promise is:

Reveal Answer

Reveal Answer

What does the time it takes for a web page to become usable depend on?

Reveal Answer

Reveal Answer

Which method is used to create a new HTML element in JavaScript?

Reveal Answer

Reveal Answer

<!DOCTYPE html> <html> <head> <title>abekus</title> </head> <body> <p id="demo"></p> <script> var x = "30" + 15 + 20; document.getElementById("demo").innerHTML = x; typeof(x); </script> </body> </html>

Reveal Answer

Reveal Answer

Do derived class constructors have a predefined this keyword?

Reveal Answer

Reveal Answer

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The argument that can be passed to the `reject()` and `resolve()` methods of a Promise is:

`<!DOCTYPE html>`

`<html>`

`<head>`

`<title>abekus</title>`

`</head>`

`<body>`

`<p id="demo"></p>`

`<script>`

`var x = "30" + 15 + 20;`

`document.getElementById("demo").innerHTML = x;`

`typeof(x);`

`</script>`

`</body>`

`</html>`