const
Declares a constant with block level scope
IE | Edge | Firefox | Chrome | Safari | Opera | iOS Safari | Opera Mini | Android Browser | Blackberry Browser | Opera Mobile | Chrome for Android | Firefox for Android | IE Mobile | UC Browser for Android | Samsung Internet | QQ Browser | Baidu Browser |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
49 | |||||||||||||||||
56 | 9.3
See notes:
|
4.4
See notes:
|
|||||||||||||||
14 | 52 | 57 | 10 | 10.0-10.2 | 4.4.3-4.4.4
See notes:
|
4
See notes:
|
|||||||||||
11 | 15 | 53 | 58 | 10.1 | 44 | 10.3 | all
See notes:
|
56 | 10
See notes:
|
37 | 57 | 52 | 11 | 11.4
See notes:
|
5 | 1.2
See notes:
|
7.12
See notes:
|
54 | 59 | TP | 45 | ||||||||||||||
55 | 60 | 46 | |||||||||||||||
56 | 61 |
Notes
-
1
const is recognized, but treated like var (no block scope, can be overwritten)
-
2
const does not have block scope
-
3
Only recognized when NOT in strict mode
-
4
Supported correctly in strict mode, otherwise supported without block scope