Interview Questions For JavaScript
- 1.Java Script File Has An Extension Of
- A.
.Java
- B.
.Js
- C.
.javascript
- D.
.xml
- 2.The Tag is used To Give Heading To The Table
- A.
Head
- B.
Td
- C.
Th
- D.
Caption
- 3.IsNaN() Evalutes And Argument To Determine if Given Value
- A.
Is Not a Null
- B.
Is Not a Number
- C.
Is Not a New Object
- D.
None Of The Above
- 4.Function is Used To Parse a String To Int
- A.
Integer.Parse
- B.
Int.Parse
- C.
Parse.Int
- D.
None
- 5.Which Of The Dialog Box Display a Message And a Data Entry Field
- A.
Alert()
- B.
Prompt()
- C.
Confirm()
- D.
Msg()
- 6.Event is Used To Check An Empty Text Box
- A.
Onclick()
- B.
OnFocus()
- C.
OnBlur()
- D.
None
- 7.Method Prompt() Contain ........Number of Parameters
- A.
One
- B.
Two
- C.
Three
- D.
Zero
- 8.GetMonth() returns The Month as
- A.
Int
- B.
Float
- C.
Char
- D.
String
- 9.If Button is clicked .......Event Handler is invoked
- A.
OnSubmit()
- B.
OnLoad()
- C.
IsPostBack()
- D.
Onclick()
- 10.A Function Associated With An object is Called
- A.
Function
- B.
Method
- C.
Link
- D.
None
- 11.Inside which HTML element do we put the JavaScript?
- A.
Js
- B.
JavaScript
- C.
Script
- D.
Scripting
- 12.Which property would you use to redirect visitor to another page?
- A.
Window.location.href
- B.
Document.href
- C.
Java.redirect.url
- D.
Link.redirect.href
- 13.Wich best describe void?
- A.
A method
- B.
A function
- C.
An operator
- D.
A statement
- 14.What is the correct JavaScript syntax to write "Hello World"?
- A.
Response.write("Hello World")
- B.
Document.write("Hello World")
- C.
("Hello World")
- D.
Echo("Hello World")
- 15.How do you call a function named "myFunction"?
- A.
Call myFunction()
- B.
MyFunction()
- C.
Call function myFunction
- 16.How do you write a conditional statement for executing some statements only if "i" is equal to 5?
- A.
If i==5 then
- B.
If i=5 then
- C.
If (i==5)
- D.
If i=5
- 17.How many different kind of loops are there in JavaScript?
- A.
Two. The "for" loop and the "while" loop
- B.
Four. The "for" loop, the "while" loop, the "do...while" loop, and the "loop...until" loop
- C.
One. The "for" loop
- 18.How do you write a conditional statement for executing some statements only if "i" is NOT equal to 5?
- A.
If (i 5)
- B.
If (i != 5)
- C.
If =! 5 then
- D.
If 5
- 19.How does a "for" loop start?
- A.
For (i = 0; i
- B.
For (i = 0; i
- C.
For i = 1 to 5
- D.
For (i
- 20.What is the correct way to write a JavaScript array?
- A.
Var txt = new Array("tim","shaq","kobe")
- B.
Var txt = new Array="tim","shaq","kobe"
- C.
Var txt = new Array(1:"tim",2:"shaq",3:"kobe")
- 21.Onclick is equivalent to which two events in sequence
- A.
Onmouseover and onmousedown
- B.
Onmousedown and onmouseout
- C.
Onmousedown and onmouseup
- D.
Onmouseup and onmouseout
- 22.You define an array using
- A.
Var myarray = new Array();
- B.
Var myarray = array new;
- C.
Var new Array() = myarray;
- D.
Var new array = myarray;
- 23.How do you round the number 8.25, to the nearest whole number?
- A.
Math.rnd(8.25)
- B.
Math.round(8.25)
- C.
Round(8.25)
- D.
Rnd(8.25)
- 24.CHow do you find the largest number of 6 and 8?
- A.
Math.max(6,8)
- B.
Top(6,8)
- C.
Ceil(6,8)
- D.
Math.ceil(6,8)
- 25.How do you find the client's browser name?
- A.
Navigator.appName
- B.
Client.navName
- C.
Browser.name
Questions: 10 | Attempts: 3391 | Last updated: Jul 23, 2020
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