These and other use cases are great reasons to use JavaScript in your application. You may have used some web apps that load more pictures and articles as you scroll down without having to refresh or change the page over and over again. Of course this doesn't mean you can ignore server side validation, but that's for another article.Īnother use case is loading files asynchronously, which you can do in JavaScript without reloading the whole page. Adding a simple script that checks the user inputs and notifies them that they should input the correct information is much better. Of course you can sometimes get away with HTML form validation, but that's not always possible. That takes a lot of time and will probably annoy the user. If the user submits the form without filling in the proper values, the page for the form has to reload again, hitting the server and coming up again for the user. Let's say you have a form that a user fills out and you want to do form validation. In short, if you don't include any JS, then your web application's user experience will not be good. You may wonder why you even need JavaScript in your web application in the first place.
#Rails change coffee script to js file how to
In this article, I'll show you how to add JavaScript code to your Rails app. You may have started using Ruby on Rails to build your web application and wondered how to add JavaScript to your code. Many websites you have visited use some JavaScript code in their frontend. It is a programming language that web browsers run. Of course, it has become far more than that now.
JavaScript is essential to add interactivity to your web application. And one way to increase the liveliness of your web application is by adding JavaScript. I wanted to learn how to program my backend server to serve my web application.īut after learning the basics of the the backend, I learned that the frontend was just as important as the backend. As a junior Full-Stack developer, my main focus was the backend.
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