How to add an alert box if the browser is not firefox-CodePudding

I want to make a javascript code that if the user is using a chromium browser triggers an alert telling to change to Firefox/Other browser that are not using chromium derivates.

I tried modifying the folowing code:

    let notChrome = !/Chrome/.test(navigator.userAgent)
    
    let alertMessage = "Please use Google Chrome to access this site.\nSome key features do not work in browsers other than Chrome."
    if(notChrome) alert(alertMessage)

But I don't know how to modify-it

CodePudding user response：

Based on detect-all-firefox-versions-in-js,below is a reference for you

let notFirefox = !/firefox/.test(navigator.userAgent.toLowerCase())
    
let alertMessage = "Please use Firefox to access this site.\nSome key features do not work in browsers other than Firefox."
if(notFirefox) alert(alertMessage)

CodePudding user response：

You should check if the browser is firefox then alert what you want

if(navigator.userAgent.toLowerCase().indexOf('firefox') == -1){
   alert("Use Firefox");
}