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let Browser Compatibility On Mozilla Firefox

Last updated on :2023-03-20

Note:

let is Fully Supported on Mozilla Firefox. If you use let on your website or web app, you can double-check that by testing your website’s URL on Mozilla Firefox with LambdaTest. The features should work fine.

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.

Support on latest Firefox

Here is the support for let for the latest version of Firefox.The latest version of Firefox is Firefox 113 for which it is fully supported.

Firefox version: 113

Fully Supported

Support on previous Firefox versions

Here’s the support for let across all versions of Firefox:

Firefox versions: 113-44

Fully Supported

Firefox versions: 43-2

Not supported

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Browser Compatibility

Mozilla Firefox

Fully Supported

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Why Test on Firefox?

To make a right testing strategy it's important to understand how many users are actually using the Firefox browser
To help you build the right browser testing matrix, here's the overall marketshare of both Firefox browser the various versions.

TOP Firefox BROWSERS (Jan 2021 - Jan 2022)

Browser Version

% Share

Release Date

Firefox 105

1.72

2024-11-19

Firefox 106

0.64

2024-11-19

Firefox 104

0.08

2024-11-19

Firefox 102

0.07

2024-11-19

Firefox 103

0.05

2024-11-19

Firefox 52

0.05

2024-11-19

Other

1.46

Data Source: Statcounter.com

ALL DESKTOP BROWSERS (Jan 2021 - Jan 2022)

Browsers

% Share

Chrome

65.24

Safari

19.06

Edge

4.39

Firefox

3.07

Samsung Internet

2.7

Opera

2.5

Other

3.04

Data Source: Statcounter.com

Browser Support for let

Medium

Browser Support For IE Versions

Fully

11-11

Partially

10-5.5

Not Supported

Edge

High

Browser Support For Edge Versions

111-12

Fully

Partially

Not Supported

Firefox

High

Browser Support For Firefox Versions

113-44

Fully

Partially

43-2

Not Supported

Chrome

High

Browser Support For Chrome Versions

114-49

Fully

48-41

Partially

40-4

Not Supported

Safari

High

Browser Support For Safari Versions

16.4-11

Fully

10.1-10

Partially

9-3.2

Not Supported

Opera

High

Browser Support For Opera Versions

95-36

Fully

35-28

Partially

27-9.5

Not Supported

Safari on iOS

High

Browser Support For Safari on iOS Versions

16.4-11

Fully

10.3-10

Partially

9-3.2

Not Supported

Android Browser

High

Browser Support For Android Browser Versions

111-97

Fully

Partially

4-2.1

Not Supported

Opera Mobile

High

Browser Support For Opera Mobile Versions

73-64

Fully

Partially

12-10

Not Supported

Chrome for Android

High

Browser Support For Chrome for Android Versions

111-97

Fully

Partially

Not Supported

Firefox for Android

High

Browser Support For Firefox for Android Versions

110-95

Fully

Partially

Not Supported

Samsung Internet

High

Browser Support For Samsung Internet Versions

20-5

Fully

4-4

Partially

Not Supported

About Mozilla Firefox

The Mozilla Corporation & its subsidiary, the Mozilla Corporation, developed Mozilla Firefox, or simply Firefox, a free and open-source web browser. Firefox displays web pages using the Gecko rendering engine, adhering to current and future web standards. It is a significant player in the market.

Mozilla Firefox was created in 2002 under the code name "Phoenix" by Mozilla community members who wanted more than a single program in their Mozilla Application Suite bundle. Firefox's beta version gained popularity with testers and was praised for its speed, security, and add-ons compared to Microsoft's then-dominant Internet Explorer 6.

In 2004, Mozilla released Firefox, challenging Internet Explorer's dominance. In nine months, Firefox had been downloaded more than 60 million times. Firefox is the successor of Netscape Navigator as it was created by Netscape in 1998 before its acquisition by AOL.

Firefox comes with a few useful features. For example, Firefox has tabbed browsing with individual processes per tab, a built-in pop-up blocker, private browsing, phishing detection, and a sandbox security model. One feature of Firefox that's vital to some users is that it works on multiple platforms.