JavaScript Closures

Example 1

Example 2

outerFn():

Outer function

Inner function

Example 3

outerFn():

Outer function

globalVar():

Inner function

Example 4

var fnRef = outerFn():

Outer function

fnRef():

Inner function

Example 5

innerVar = 1

innerVar = 1

innerVar = 1

innerVar = 1

Example 6

globalVar = 1

globalVar = 2

globalVar = 3

globalVar = 4

Example 7

outerVar = 1

outerVar = 2

outerVar = 1

outerVar = 2

Example 8

(1) outerVar = 1

(2) outerVar = 3

(1) outerVar = 4

(1) outerVar = 1

(2) outerVar = 3

(1) outerVar = 4

Example 9

readyVar = 1

readyVar = 2

Example 10

Add 1

Example 11

Add 1 Subtract 1

Example 12

First Second Third

Example 13

First Second Third

Example 14 (returns an error)

First Second Third