How to disable the browser’s back button using JavaScript?

In this tutorial I will show you how to disable the back button using JavaScript. We cannot disable the browser back button. Instead, we can prevent them with the help of JavaScript code.

The below following JavaScript code will prevent the user to go back to the previous page.

The user won’t able to come back to the previous page.

Here is an example,

<script type="text/javascript">

 
    functionpreventBack() {

        window.history.forward();

    }

 

    setTimeout("preventBack()",0)

    window.onunload = function() { null };

  

</script>