1500+ Javascript Questions - Set 236 [With Solutions]

Javascript Questions Set 236:

Quiz Mode

Javascript Questions

Set 236/246

The number of methods in the History object are _____

_ and _ are also datatypes in Javascript.

Number & String

Boolean and Null

Undefined and Objects

All the Above

The unordered collection of properties, each of which has a name and a value is called _________

Object

Array

Serialized Object

String

What form of event propagation handles the registered container elements?

Event Registration

Event Propagation

Default actions

Event Capturing

Identify the React Router component which matches a path to the current location and calls back with a match or null.

Navigate

Match

Redirect

redirectTo

What is the output of the following code?

<script>

var x = 45.345;

var y = x.toFixed();

var z = x.toPrecision();

document.write(y + "
" + z);

</script>

45 45

45.345 45

45 45.345

45.345 45.345

How can you calculate the time taken for a page to load once it is received from the server?

responseEnd - loadEventEnd

loadEventEnd - responseEnd

loadEventEnd / responseEnd

responseEnd / loadEventEnd

What is the reason for avoiding the use of the attributes property in the HTML DOM?

Attributes have attributes

Attributes are found to be unnecessary

Attributes don't have attributes

Attributes are considered irrelevant

Which of the following is the correct way of declaring a variable in JaveScript?

var variable = document.getElementById("Abekus");

let variable = document.getElementById("Abekus");

const variable = document.getElementById("Abekus");

All of the Above

What will be the output of the following JavaScript code?

`<head id="myHead"> <title>My title</title> </head> <p id="demo"></p> <script> function myFunction() { var x = document.head.id; document.getElementById("demo").innerHTML = x; } </script>`

demo

myHead

error

undefined

Quiz Mode

Qn. Sets

Javascript Questions Set 236:

Javascript Questions

The number of methods in the History object are _____

Reveal Answer

Reveal Answer

_____ and _____ are also datatypes in Javascript.

Reveal Answer

Reveal Answer

The unordered collection of properties, each of which has a name and a value is called _________

Reveal Answer

Reveal Answer

What form of event propagation handles the registered container elements?

Reveal Answer

Reveal Answer

Identify the React Router component which matches a path to the current location and calls back with a match or null.

Reveal Answer

Reveal Answer

What is the output of the following code? <script> var x = 45.345; var y = x.toFixed(); var z = x.toPrecision(); document.write(y + "" + z); </script>

Reveal Answer

Reveal Answer

How can you calculate the time taken for a page to load once it is received from the server?

Reveal Answer

Reveal Answer

What is the reason for avoiding the use of the attributes property in the HTML DOM?

Reveal Answer

Reveal Answer

Which of the following is the correct way of declaring a variable in JaveScript?

Reveal Answer

Reveal Answer

What will be the output of the following JavaScript code? <head id="myHead"> <title>My title</title> </head> <p id="demo"></p> <script> function myFunction() { var x = document.head.id; document.getElementById("demo").innerHTML = x; } </script>

Reveal Answer

Reveal Answer

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_ and _ are also datatypes in Javascript.

What is the output of the following code?

<script>

var x = 45.345;

var y = x.toFixed();

var z = x.toPrecision();

document.write(y + "
" + z);

</script>

What will be the output of the following JavaScript code?

`<head id="myHead"> <title>My title</title> </head> <p id="demo"></p> <script> function myFunction() { var x = document.head.id; document.getElementById("demo").innerHTML = x; } </script>`