The next step is to define the URL of a server you wish to connect to. This should be a URL that is known to always be up and running. For example, a good choice could be: “http://www.google.com” for this step. Once this URL has been defined and set up, open up a connection with it using the XMLHttpRequest object.
The last step involves actually listening for the response. Create an if statement with an ‘if’ clause that checks if the status of the server is 200; this status code symbolizes an HTTP request taking place with no problem. If it is 200, we have a successful connection, and if it is anything else (401, 404, 500), we have a failed connection.
It is important to note that the code used to detect an active internet connection is not foolproof. There are certain scenarios in which the code may not be able to detect a connection, such as when the user is connected to a local network but not the internet. In these cases, it is important to have additional code in place to detect these scenarios and handle them accordingly.
Implementing the Check Internet Connection Feature
Once all the previous steps have been completed, you should have a working implementation of the check internet connection feature. With all of the necessary steps above in place, it’s simply a matter of defining a few variables, setting up callbacks and appropriate error handlers. As long as you are careful when setting up your code, all should work swimmingly.
It is important to remember to test your code thoroughly before deploying it to production. This will ensure that any potential issues are caught and addressed before they can cause any problems. Additionally, it is a good idea to keep track of any changes you make to the code, so that you can easily roll back to a previous version if needed.
Working with Different Browsers and Platforms