JavaScript - Understanding JS

How to check JavaScript code in Browser

Ctrl+Shift+J

JavaScript

What is JavaScript?
The programming language for the interactive WEB
FrontEnd 를 위한 only language –> JS
javascript는 html과 css를 넘어서서 이벤트에 반응하기 위해서 만들어졌음

ES5, ES6, ES

  • ES5 : ECMAScript5
  • ES6 : ECMAScript6
  • spec
  • javascript 는 Specification 에 따라 업데이트됨

VanilaJS

JavaScript that is provided to you through the browser
it’s pure raw Javascript with no frameworks or libraries

JavaScript coding

  • JS 파일은 항상 Body 아래에 있어야한다.
  • <script>is not a self closing tag.
<!DOCTYPE html>
<html>
    <head>
        <title>Something</title>
        <link rel="stylesheet" href="index.css"/>
    </head>
    <body>
        <h1>This works!</h1>
        <script src="index.js"></script>
    </body>
</html>

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