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const

Last updated on : 2023-03-20

Note:

const shows a browser compatibility score of 97. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

Overview

Declares a constant in multiple files without having to specify it repeatedly.

Specifications

ECMAScript Language Specification # sec-let-and-const-declarations

Syntax

const name1 = value1 [, name2 = value2 [, ... [, nameN = valueN]]];

Code snippets

qlist-const-iterator.html

Source:qlist-const-iterator.html

qjsonarray-const-iterator.html

Source:qjsonarray-const-iterator.html

qlist-const-iterator-members.html

Source:qlist-const-iterator-members.html

Browser Compatibility

const on IE is fully supported on None of the versions, partially supported on 11-11, and not supported on 5.5-10 IE versions.
const on Edge is fully supported on 12-111, partially supported on None of the versions, and not supported on below 12 Edge versions.
const on Firefox is fully supported on 36-113, partially supported on 2-35, and not supported on below 2 Firefox versions.
const on Chrome is fully supported on 49-114, partially supported on 4-48, and not supported on below 4 Chrome versions.
const on Safari is fully supported on 11-16.4, partially supported on 3.2-10.1, and not supported on below 3.2 Safari versions.
const on Opera is fully supported on 36-95, partially supported on 10.5-35, and not supported on 9.5-9 Opera versions.
const on Safari on iOS is fully supported on 11-16.4, partially supported on 3.2-10.3, and not supported on below 3.2 Safari on iOS versions.
const on Android Browser is fully supported on 97-111, partially supported on 2.3-4, and not supported on below 2.3 Android Browser versions.
const on Opera Mobile is fully supported on 64-73, partially supported on 10-12, and not supported on below 10 Opera Mobile versions.
const on Chrome for Android is fully supported on 97-111, partially supported on None of the versions, and not supported on below 97 Chrome for Android versions.
const on Firefox for Android is fully supported on 95-110, partially supported on None of the versions, and not supported on below 95 Firefox for Android versions.
const on Samsung Internet is fully supported on 5-20, partially supported on 4-4, and not supported on below 4 Samsung Internet versions.

High

Browser Compatibility Score

Medium

Browser Support For IE Versions

Fully

11-11

Partially

5.5-10

No Support

Edge

High

Browser Support For Edge Versions

12-111

Fully

Partially

No Support

Firefox

High

Browser Support For Firefox Versions

36-113

Fully

2-35

Partially

No Support

Chrome

High

Browser Support For Chrome Versions

49-114

Fully

4-48

Partially

No Support

Safari

High

Browser Support For Safari Versions

11-16.4

Fully

3.2-10.1

Partially

No Support

Opera

High

Browser Support For Opera Versions

36-95

Fully

10.5-35

Partially

9.5-9

No Support

Safari on iOS

High

Browser Support For Safari on iOS Versions

11-16.4

Fully

3.2-10.3

Partially

No Support

Android Browser

High

Browser Support For Android Browser Versions

97-111

Fully

2.3-4

Partially

No Support

Opera Mobile

High

Browser Support For Opera Mobile Versions

64-73

Fully

10-12

Partially

No Support

Chrome for Android

High

Browser Support For Chrome for Android Versions

97-111

Fully

Partially

No Support

Firefox for Android

High

Browser Support For Firefox for Android Versions

95-110

Fully

Partially

No Support

Samsung Internet

High

Browser Support For Samsung Internet Versions

5-20

Fully

4-4

Partially

No Support

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Last Modified date

2023-03-20