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let

Last updated on : 2023-03-20

Note:

let 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

Unlike the var keyword, it allows you to declare variables that are only valid within the scope of the block statement or expression on which it is used.

Specifications

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

Syntax

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

Code snippets

index.html

Source:index.html

001272.html

Source:001272.html

Browser Compatibility

let on IE is fully supported on None of the versions, partially supported on 11-11, and not supported on 5.5-10 IE versions.
let on Edge is fully supported on 12-111, partially supported on None of the versions, and not supported on below 12 Edge versions.
let on Firefox is fully supported on 44-113, partially supported on None of the versions, and not supported on 2-43 Firefox versions.
let on Chrome is fully supported on 49-114, partially supported on 41-48, and not supported on 4-40 Chrome versions.
let on Safari is fully supported on 11-16.4, partially supported on 10-10.1, and not supported on 3.2-9 Safari versions.
let on Opera is fully supported on 36-95, partially supported on 28-35, and not supported on 9.5-27 Opera versions.
Safari on iOS is fully supported on 11-16.4, partially supported on 10-10.3, and not supported on 3.2-9 Safari on iOS versions.
Android Browser is fully supported on 97-111, partially supported on None of the versions, and not supported on 2.1-4 Android Browser versions.
Opera Mobile is fully supported on 64-73, partially supported on None of the versions, and not supported on 10-12 Opera Mobile versions.
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.
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.
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

44-113

Fully

Partially

2-43

No Support

Chrome

High

Browser Support For Chrome Versions

49-114

Fully

41-48

Partially

4-40

No Support

Safari

High

Browser Support For Safari Versions

11-16.4

Fully

10-10.1

Partially

3.2-9

No Support

Opera

High

Browser Support For Opera Versions

36-95

Fully

28-35

Partially

9.5-27

No Support

Safari on iOS

High

Browser Support For Safari on iOS Versions

11-16.4

Fully

10-10.3

Partially

3.2-9

No Support

Android Browser

High

Browser Support For Android Browser Versions

97-111

Fully

Partially

2.1-4

No Support

Opera Mobile

High

Browser Support For Opera Mobile Versions

64-73

Fully

Partially

10-12

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