1. CIS 375—Web App Dev II
JavaScript II

2. if and if…else Syntax code to be executed if condition is true}
else {

3. Example of if Statement
// Display “Good morning” if before 10 am
var today = new Date()
var time = today.getHours()
if (time < 10) {
document.write("<b>Good morning</b>") }

4. Example of if…else Statement
// Display “Good morning” if before 10 am
// Display “Good day!” otherwise
var today = new Date()
var time = today.getHours()
if (time < 10) {
document.write("<b>Good morning</b>") }
else {
document.write("Good day!")

5. Syntax of switch Statement
switch (expression) {
case label1:
code to be executed if expression = label1
break
case label2:
code to be executed if expression = label2
default:
code to be executed if expression is different from both
label1 and label2 }

6. Example of switch Statement
var today = new Date()
theDay = today.getDay()
switch (theDay) {
case 5:
document.write("Finally Friday")
break
case 6:
document.write("Super Saturday")
case 0:
document.write("Sleepy Sunday")
default:
document.write(“Can’t wait till the weekend!”) }

7. Syntax for Looping while do…while
while (condition) {
code to be executed }
do…while
do {
while (condition)
for (equivalent to _______ with a counter variable)
for (initialization; condition; increment) {

8. Examples of while & do…while
while (i <= 5){
document.write("The number is " + i)
document.write("<br>")
i++ }
do…while
do{
while (i <= 5)

9. Example of for Loop for (i = 1; i <= 6; i++){
document.write("<h" +i+ ">This is header " + i)
document.write("</h" + i + ">") }

10. Miscellaneous Guidelines
JavaScript is ______ sensitive
A function named "myfunction" is not the same as "myFunction".
White space (use to make code more ___________)
JavaScript ignores extra spaces
name="Hege" same as name = "Hege“
Use the “\” to insert special characters
document.write (“Let’s sing \"Happy Birthday\".")
Comments
Use // for single line, /* comments */ for a block