# Quick Guide on HTML / Javascript / CSS * Quick Tutorial on HTML / Javascript / CSS * [W3.CSS](https://www.w3schools.com/w3css/default.asp) * [Javascript](https://www.w3schools.com/js/) * [HTML](https://www.w3schools.com/html/default.asp) * [Bootstrap CSS Framework](https://www.w3schools.com/bootstrap/bootstrap_ver.asp) * Tools * Visual Studio Code * Extension : Live Server ## Javascript Library * [jQuery](https://www.w3schools.com/jquery/jquery_intro.asp) * syntax : `$(selector).action()` * `$("p").hide()` : hide paragraph element * `$("#test").hide()` : hide element with id=test * `$(".test").hide()` : hide element with class=test * `$(this).hide()` : hide current element * [more...](https://www.w3schools.com/jquery/jquery_selectors.asp) * [download](https://jquery.com/download/) and add this ```html ``` ```html ``` * Events * `.change()` * `.click()` * `.mouseenter()` * [more...](https://www.w3schools.com/jquery/jquery_events.asp) * [AJAX](https://www.w3schools.com/jquery/jquery_ajax_intro.asp) (Asynchronous JavaScript and XML) : Exchange data with server * `$("#div1").load("demo.txt")` * `$.get(URL,data,callback)` * `$.post(URL,data,callback)` * [References Overview](https://www.w3schools.com/jquery/jquery_ref_overview.asp)