JavaScript

1.What is JavaScript?

5. What are modal windows?

Which 1 of the following symbols is used for JavaScript comments?

• //

• \

• ^

• ?

Which of these will increase the value of the variable X?

• increment (x)

• x++;

• x=x;

• x+1;

You need to evaluate the following code segment.

• Line 02: undefined

  Line 04: string

  Line 06: object

  Line 08: number

  Line 10:object

• Line 02: string

  Line 04: string

  Line 06: object

  Line 08: object

  Line 10:object

• Line 02: undefined

  Line 04: object

  Line 06: object

  Line 08: number

  Line 10:number

• Line 02: string

  Line 04: string

  Line 06: object

  Line 08: number

  Line 10:number

What will this code display?

• Hello Emma

• Hello user

• Hello+user

• nothing

What will this code display?

• 570

• 569

• 568

• attendees

JavaScript : What is the alert display for text3 ?

• John Doe

• JohnDoe

• "John" " " "Doe"

• "JohnDoe"

JavaScript : What is the alert display for z?

• Hello5

• 10

• 55

• Hello15

Which message will the user see?

• "Hello user"

• No message

• "Goodbye user"

• "message + user"