Html Chapter 10

Front 1

Describe two differences between java and javascript

Back 1

Java is a compiled lanagauge: javascript is intrepretated langauge. Java a VM or intreperter to run a APPLET JavaScript requires a browser

Front 2

Within what element should be placed your javascript code?

Back 2

script

Front 3

Why should you place your Javascript code within your HTML comment tag?

Back 3

To prevent older browsers that do not support Javascript from displaying the Javascripts commands on the web page.

Front 4

Why should you enclose an embedded script within a CDATA section? What is the problem?

Back 4

Character symbols such as "<" ">" and "&" are often used in JavaScript programs.

Front 5

What JavaScript command writes the text "Avalon Pages" marked as an h1 heading to your Web Pages?

Back 5

document.write<h1>Avalon Books</h1>");

Front 6

What are four variable types supported by javascript?

Back 6

1. Numbers
2. String
3. Boolean
4. Null values

Front 7

What JavaScript command stores the current date in variable named "Now"?

Back 7

var Now = new Date();

Front 8

What javascript command extracts the current day of the month from the Now Variable , storing it in a variable named "tdate".

Back 8

var Tdate=Now.getDate();

Front 9

if the current month is sept what is the value returned by the getMonth() method?

Back 9

8

Front 10

Provide the general syntax of a Javascript function

Back 10

function function_name(parameters) {
javascript commands
}

Front 11

What Javascript command calls the function, "calcMort" using the variables: loan,interest, and period as the parameters values and storing the resulting value in variable named "mortgage"?

Back 11

var mortgage=calcMort(loan, interest, period);

Front 12

What javascript code displays the text "welcome back!" if the value of the MonthName variable is September"?

Back 12

If (MonthName == "semptember") {
document.write("Welcome Back! ");
}

Front 13

What javascript code displays welcome back! If MonthName equals "September", or the text "Today's Headlines" if the month is september?

Back 13

if (MonthName == "september") {
document.write("Welcome back !");
}else{
document.write("Todays Headlines);

Front 14

What javascript code displays welcome back! If MonthName equals "September", "Summers Here" if the month name equals june or "todays headlines' for other months?

Back 14

if (MonthName == "september") {
document.write("Welcome back !");
}else{

if monthName =="June") {
document.write("Summer's here!")
}else{
document.write("Todays Headlines);
}
}

Front 15

What is an array? What command would you use to create an array named colors?

Back 15

An array is an ordered collection of values referenced by singles name.
var Colors = new Array();

Front 16

What javascript command would you enter to place values "RED", "Green", "Blue" , "Black" and "White" into an array named "Colors"?

Back 16

Var Colors = new Array ("Red"', "Green", "Blue", "Black", "White");

Front 17

What is a program loop

Back 17

A program loop is a set of instructions that is executed repeatedly. There are two types of loops: loops that repeat a set of number of times before quitting ( for loops ) and loops that repeast until a certain condition is met ( while Loops.)

Front 18

What value will counter variable i take the following loop
for (i=5; i<=25; i+=25; i+=5)

Back 18

5, 10 , 15 , 20 , 25