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Javascript Questions Set 91:

Quiz Mode

JavaScript is a ______ typed language.

loosely

strongly

public

private

Solution:

What does the this keyword refer to when used alone?

The owner object

The global object

Any object

None of these

Solution:

The word "document" mainly refers to

Dynamic information

Static information

Both dynamic and static information

Temporary information

Solution:

Which is the storage that allows the caching of web pages and their associated resources?

Web Databases

Offline Web Applications

FileSystem API

Solution:

How to detect and respond to mouse drags?

Registering a mousedown handler

Registering a mouseover handler

Releasing a mousedown handler

Releasing a mouseover handler

Solution:

What will happen to the given array?

`const languages = ["C", "Java", "Python"];`

`languages[0] = "C#";`

"C" will be replaced by "C#"

Error

There will be no change.

"C#" will be added to the beginning of the array.

Solution:

The purpose of extensible attribute is to __________

make all of the own properties of that object non configurable

to configure and bring a writable property

“lock down” objects into a known state and prevent outside tampering

to include new properties into the object

Solution:

Predict the output:

const nullValue = null;

const emptyText = "";

const valA = nullValue ?? "default for A";

const valB = emptyText ?? "default for B";

console.log(valA); console.log(valB);

"", "default for A"

null, "default for B"

"default for A", "default for B"

"default for A", ""

Solution:

What is the correct way to use an iterator with a JavaScript array?

var arr = ['w', 'y', 'k', 'o', 'p'];
var eArr = arr[Symbol.iterator];

var arr = ['w', 'y', 'k', 'o', 'p'];
var eArr = arr[Symbol.iterator]();

var arr = ['w', 'y', 'k', 'o', 'p'];
var eArr = arr[iterator]();

var arr = ['w', 'y', 'k', 'o', 'p'];
var eArr = arr[iterator];

Javascript Questions Set 91:

JavaScript is a ______ typed language.

Solution:

What does the this keyword refer to when used alone?

Solution:

The word "document" mainly refers to

Solution:

Which is the storage that allows the caching of web pages and their associated resources?

Solution:

How to detect and respond to mouse drags?

Solution:

What will happen to the given array?

`const languages = ["C", "Java", "Python"];`

`languages[0] = "C#";`

Solution:

The purpose of extensible attribute is to __________

Solution:

Predict the output:

const nullValue = null;

const emptyText = "";

const valA = nullValue ?? "default for A";

const valB = emptyText ?? "default for B";

console.log(valA); console.log(valB);

Solution:

What is the correct way to use an iterator with a JavaScript array?

Solution:

Related Question Sets:

Related Topics:

Javascript Questions Set 91:

JavaScript is a ______ typed language.

Solution:

What does the this keyword refer to when used alone?

Solution:

The word "document" mainly refers to

Solution:

Which is the storage that allows the caching of web pages and their associated resources?

Solution:

How to detect and respond to mouse drags?

Solution:

What will happen to the given array? const languages = ["C", "Java", "Python"]; languages[0] = "C#";

Solution:

The purpose of extensible attribute is to __________

Solution:

Predict the output: const nullValue = null; const emptyText = ""; const valA = nullValue ?? "default for A"; const valB = emptyText ?? "default for B"; console.log(valA); console.log(valB);

Solution:

What is the correct way to use an iterator with a JavaScript array?

Solution:

Related Question Sets:

Related Topics:

What will happen to the given array?

`const languages = ["C", "Java", "Python"];`

`languages[0] = "C#";`

Predict the output:

const nullValue = null;

const emptyText = "";

const valA = nullValue ?? "default for A";

const valB = emptyText ?? "default for B";

console.log(valA); console.log(valB);