etecting user browser sometimes very useful if we want to write our logic based on the browser. Sometimes we need to do some specific things based on the browser or sometimes some functionality may not support in different browser so we need to detect the user browser and write our logic.
In this article, we'll see how we can detect the user browser using javascript.

To get the user browser, we have navigator object which contains the userAgent. And in this navigator.userAgent it contains the browser specific information.
So, let's see how we can detect the browser using navigator.userAgent.

Complete Code:

Let's create a file with name detect-browser.html and write the below codes:

                            <!DOCTYPE html> 
                            <html> 
                                
                            <head> 
                                <title> Detect browser using JavaScript? | IDKBlogs.com </title> 
                            </head> 
                            
                            <body> 
                                <h1 style="color: red">IDKBlogs</h1> 
                                
                                <b> How to detect Safari, Chrome, IE, Firefox and Opera browser using JavaScript? </b> 
                                
                                <p> Click on the button to detect the current browser :</p> 
                                
                                <button onclick="checkBrowser()"> Detect browser</button> 
                    
                                <p style="color: red">If you want to become best JS developer and want to learn all the concepts of JS, then <a target="_blank" href="https://idkblogs.com/js">Click here</a></p>
                                
                                <script> 
                                    function checkBrowser() {
                    
                                        let userAgentString =
                                            navigator.userAgent;
                    
                                        let chromeAgent =
                                            userAgentString.indexOf("Chrome") > -1 ? 'Chrome' : undefined;
                    
                                        let firefoxAgent =
                                            userAgentString.indexOf("Firefox") > -1 ? 'Firefox' : undefined;
                    
                                        let safariAgent =
                                            userAgentString.indexOf("Safari") > -1 ? 'Safari' : undefined;
                    
                                        let operaAgent =
                                            userAgentString.indexOf("OP") > -1 ? 'Opera' : undefined;
                    
                                        let IExplorerAgent =
                                            (userAgentString.indexOf("MSIE") > -1 ? 'IExplorer' : undefined) || (
                                                userAgentString.indexOf("rv:") > -1 ? 'IExplorer' : undefined);
                    
                                        alert(chromeAgent || firefoxAgent || safariAgent || operaAgent || IExplorerAgent);
                                    } 
                                </script> 
                            </body> 
                            
                            </html>

In the above code we have a button Detect browser and after clicking on this button, it'll call a function checkBrowser() And in this function we wrote the logic to detect the browser.

Test on Chrome:

Open the above file in the chrome browser and see the output as:

Detect the user browser using JavaScript

Now click on the Detect browser button and see the result. After clicking the button Detect browser you can see a popup with the browser name as:

Detect the user browser using JavaScript

Test on Firefox:

Now, open this html file into firefox browser and click on the button Detect browser and see the result as:

Detect the user browser using JavaScript

Test on Safari:

Now, open this html file into safari browser and click on the button Detect browser and see the result as:

Detect the user browser using JavaScript

Conclusion:

In this article, we learned how we can detect the user browser in javascript, and based on the browser we can write our logic for browser specific.

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Detect the user browser using JavaScript

Detect the user browser (Safari, Chrome, IE, Firefox and Opera) using JavaScript ?

How to detect the user browser using JavaScript?

Complete Code:

Test on Chrome:

Test on Firefox:

Test on Safari:

Conclusion:

Support our IDKBlogs team

Welcome to IDKBlogs.

If our contents help you and you learned from this platform, please consider supporting what we do.

Thank you.

Strongly Recommended Books For You:

For India:

For Other Countries (United States, United Kingdom, Spain, Italy, Germany, France, Canada, etc)

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