Industry experts say that around 98% of websites are built with JavaScript. Also, it is easy to find experienced JS developers to dedicatedly work on your mission-critical web and mobile app development project. Apart from that, here are the top reasons why you should use JavaScript for your mission-critical app development: Quick and responsive Versatile to create customizable and scalable applications Apps written in JavaScript are quite efficient in performance It has a simple learning curve, making it easy for developers to learn it for app development It can be used to create many types of components, enhancing user interface