Javascript Quiz

Which is the correct way to write a JavaScript array?

• var txt = new Array(1:"tim",2:"kim",3:"jim")

• var txt = new Array:1=("tim")2=("kim")3=("jim")

• var txt = new Array("tim","kim","jim")

• var txt = new Array="tim","kim","jim"

What is the correct syntax for referring to an external script called " abc.js"?

• <script href=" abc.js">

• <script name=" abc.js">

• <script src=" abc.js">

• None of the above

What is the correct JavaScript syntax to write "Hello World"?

• System.out.println("Hello World")

• println ("Hello World")

• document.write("Hello World")

• response.write("Hello World")

How does JavaScript store dates in a date object?

• The number of milliseconds since January 1st, 1970

• The number of days since January 1st, 1900

• The number of seconds since Netscape's public stock offering.

• None of the above

Which of the following is not a valid JavaScript variable name?

• 2names

• _first_and_last_names

• FirstAndLast

• None of the above

Which of the following can't be done with client-side JavaScript?

• Validating a form

• Sending a form's contents by email

• Storing the form's contents to a database file on the server

• None of the above

How to create a Date object in JavaScript?

• dateObjectName = new Date([parameters])

• dateObjectName.new Date([parameters])

• dateObjectName := new Date([parameters])

• dateObjectName Date([parameters])

The _______ method of an Array object adds and/or removes elements from an array.

• reverse

• shift

• slice

• splice

Which of the following function of Array object creates a new array with the results of calling a provided function on every element in this array?

• push()

• join()

• pop()

• map()

Which of the following function of Array object removes the first element from an array and returns that element?

• reverse()

• shift()

• slice()

• some()