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Javascript Questions Set 200:

Quiz Mode

How many read-only attributes are present in the Navigator object?

Solution:

What will be the output of the following JavaScript code?

`var A = new F();`

`a.constructor === F`

false

true

Solution:

What is the lifetime of the data stored through localStorage?

Permanent

Temporary

Both Permanent and Temporary at times

Cannot store

Solution:

What is the output of the following code?

<script>

var x = 4;

document.write(typeof(x.toExponential(4)));

</script>

number

integer

string

float

Solution:

What does the `pop()` method do in an array?

None of the above

Increments the total length by 1

Updates the elements

Decrements the total length by 1

Solution:

Which of the following functions reads the textual contents of a URL and returns it as a string?

spawn(f);

readFile(file);

readUrl(url);

load(filename, ...);

Solution:

What is the code to start displaying the time when the document loads?

onload = displayTime;

window = displayTime;

window.onload = displayTime;

window.onload = start;

Solution:

Predict the output:

var o = {f: function() { return this.a + this.b; }};
var p = Object.create(o);
p.a = 4;
p.b = 8;

console.log(p.f());

error in output

undefined

Solution:

Which of the following statements about JavaScript is correct?

None of the above

JavaScript is not an interpreter-based scripting language.

JavaScript cannot handle dates and time.

JavaScript is an object-based scripting language.

Solution:

The meaning of Augmenting classes is that:

Objects inherit prototype properties even in a dynamic state.

Objects inherit prototype properties only in a dynamic state.

Objects inherit prototype properties in the static state.

Objects don't inherit prototype properties in the static state.

Javascript Questions Set 200:

How many read-only attributes are present in the Navigator object?

Solution:

What will be the output of the following JavaScript code?

`var A = new F();`

`a.constructor === F`

Solution:

What is the lifetime of the data stored through localStorage?

Solution:

What is the output of the following code?

<script>

var x = 4;

document.write(typeof(x.toExponential(4)));

</script>

Solution:

What does the `pop()` method do in an array?

Solution:

Which of the following functions reads the textual contents of a URL and returns it as a string?

Solution:

What is the code to start displaying the time when the document loads?

Solution:

Predict the output:

var o = {f: function() { return this.a + this.b; }};
var p = Object.create(o);
p.a = 4;
p.b = 8;

console.log(p.f());

Solution:

Which of the following statements about JavaScript is correct?

Solution:

The meaning of Augmenting classes is that:

Solution:

Related Question Sets:

Related Topics:

Javascript Questions Set 200:

How many read-only attributes are present in the Navigator object?

Solution:

What will be the output of the following JavaScript code? var A = new F(); a.constructor === F

Solution:

What is the lifetime of the data stored through localStorage?

Solution:

What is the output of the following code? <script> var x = 4; document.write(typeof(x.toExponential(4))); </script>

Solution:

What does the pop() method do in an array?

Solution:

Which of the following functions reads the textual contents of a URL and returns it as a string?

Solution:

What is the code to start displaying the time when the document loads?

Solution:

Predict the output: var o = {f: function() { return this.a + this.b; }}; var p = Object.create(o); p.a = 4; p.b = 8; console.log(p.f());

Solution:

Which of the following statements about JavaScript is correct?

Solution:

The meaning of Augmenting classes is that:

Solution:

Related Question Sets:

Related Topics:

What will be the output of the following JavaScript code?

`var A = new F();`

`a.constructor === F`

What is the output of the following code?

<script>

var x = 4;

document.write(typeof(x.toExponential(4)));

</script>

What does the `pop()` method do in an array?

Predict the output:

var o = {f: function() { return this.a + this.b; }};
var p = Object.create(o);
p.a = 4;
p.b = 8;

console.log(p.f());