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MohammadAli Keshavarz
Learning JavaScript
Commits
1b9a56e0
Commit
1b9a56e0
authored
Oct 10, 2019
by
MohammadAli Keshavarz
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The Ternary Operator and Switch Statements
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d82e8fd3
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script.js
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1b9a56e0
...
...
@@ -133,7 +133,7 @@ if (BMIMark > BMIJohn) {
/*****************************
* Boolean logic
*/
/*
var firstName = 'John';
var age = 20;
if (age < 13) {
...
...
@@ -145,3 +145,56 @@ if (age < 13) {
} else {
console.log(firstName + ' is a man.');
}
*/
/*****************************
* The Ternary Operator and Switch Statements
*/
var
firstName
=
'John'
;
var
age
=
14
;
// Ternary operator
age
>=
18
?
console
.
log
(
firstName
+
' drinks beer.'
)
:
console
.
log
(
firstName
+
' drinks juice.'
);
var
drink
=
age
>=
18
?
'beer'
:
'juice'
;
console
.
log
(
drink
);
(
if
(
age
>=
18
)
{
var
drink
=
'beer'
;
}
else
{
var
drink
=
'juice'
;
}
// Switch statement
var
job
=
'instructor'
;
switch
(
job
)
{
case
'teacher'
:
case
'instructor'
:
console
.
log
(
firstName
+
' teaches kids how to code.'
);
break
;
case
'driver'
:
console
.
log
(
firstName
+
' drives an uber in Lisbon.'
);
break
;
case
'designer'
:
console
.
log
(
firstName
+
' designs beautiful websites.'
);
break
;
default
:
console
.
log
(
firstName
+
' does something else.'
);
}
age
=
56
;
switch
(
true
)
{
case
age
<
13
:
console
.
log
(
firstName
+
' is a boy.'
);
break
;
case
age
>=
13
&&
age
<
20
:
console
.
log
(
firstName
+
' is a teenager.'
);
break
;
case
age
>=
20
&&
age
<
30
:
console
.
log
(
firstName
+
' is a young man.'
);
break
;
default
:
console
.
log
(
firstName
+
' is a man.'
);
}
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