> For the complete documentation index, see [llms.txt](https://mentorship101.gitbook.io/mentorship-101/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mentorship101.gitbook.io/mentorship-101/javascript.md). # JavaScript {% hint style="info" %} Make sure you have gone through[ General programming](https://mentorship101.gitbook.io/mentorship-101/general-programming), this will be a more advanced. {% endhint %} ## What's JavaScript? Also known as EcmaScript. It's major aim is to allow users interact with HTML elements. It majorly allows page interactivity. **Example** If you click on button, you would require to view confirmation dialog and accept yes or no. Also for form inputs, you need to validate user inputs like strong passwords can be validated in JavaScript. {% hint style="info" %} \ ``` {% endcode %} {% code title="external.html" %} ``` //External file scripts // index.html file Javscript // script.js file function ExternalClick() { alert('am an external file clicked'); } ``` {% endcode %} ### Note The button in both codes above has an event `onClick` that recognises the button has been clicked by a user and issues an alert dialog box. What You Will Learn * [ ] Basic javascript in a simple project * [ ] JavaScript OOP * [ ] Objects and prototypes * [ ] Promises * [ ] Requests * [ ] ES6 `Let's give users freedom`