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MohammadAli Keshavarz
Learning JavaScript
Commits
c341638e
Commit
c341638e
authored
Oct 13, 2019
by
MohammadAli Keshavarz
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Loops and iteration
parent
914b11a1
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c341638e
...
...
@@ -348,7 +348,7 @@ console.log(jane);
/*****************************
* Objects and methods
*/
/*
var john = {
firstName: 'John',
lastName: 'Smith',
...
...
@@ -362,5 +362,48 @@ var john = {
};
john.calcAge();
console.log(john);
*/
/*****************************
* Loops and iteration
*/
// for loop
for
(
var
i
=
1
;
i
<=
20
;
i
+=
2
)
{
console
.
log
(
i
);
}
// i = 0, 0 < 10 true, log i to console, i++
// i = 1, 1 < 10 true, log i to the console, i++
//...
// i = 9, 9 < 10 true, log i to the console, i++
// i = 10, 10 < 10 FALSE, exit the loop!
var
john
=
[
'John'
,
'Smith'
,
1990
,
'designer'
,
false
,
'blue'
];
for
(
var
i
=
0
;
i
<
john
.
length
;
i
++
)
{
console
.
log
(
john
[
i
]);
}
// While loop
var
i
=
0
;
while
(
i
<
john
.
length
)
{
console
.
log
(
john
[
i
]);
i
++
;
}
// continue and break statements
var
john
=
[
'John'
,
'Smith'
,
1990
,
'designer'
,
false
,
'blue'
];
for
(
var
i
=
0
;
i
<
john
.
length
;
i
++
)
{
if
(
typeof
john
[
i
]
!==
'string'
)
continue
;
console
.
log
(
john
[
i
]);
}
for
(
var
i
=
0
;
i
<
john
.
length
;
i
++
)
{
if
(
typeof
john
[
i
]
!==
'string'
)
break
;
console
.
log
(
john
[
i
]);
}
// Looping backwards
for
(
var
i
=
john
.
length
-
1
;
i
>=
0
;
i
--
)
{
console
.
log
(
john
[
i
]);
}
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