javascriptjqueryfirefox

Detect all Firefox versions in JS

How to detect Firefox in JavaScript?
I want to detect all versions of Firefox.

Solution

  • This will detect any version of Firefox:

    const isFirefox = navigator.userAgent.toLowerCase().includes('firefox');

if (isFirefox) {
  console.log("Your browser is Firefox");
} else {
  console.log("Your browser is not Firefox");
}

    You may want to consider using feature-detection ala Modernizr, or a related tool, to accomplish what you need.