JSX 문법 Javascript 문법
https://babeljs.io/repl/#?browsers=defaults%2C%20not%20ie%2011%2C%20not%20ie_mob%2011&build=&builtIns=false&spec=false&loose=false&code_lz=GYVwdgxgLglg9mABACwKYBt1wBQEpEDeAUIogE6pQhlIA8AJjAG4B8AEhlogO5xnr0AhLQD0jVgG4iAXyJA&debug=false&forceAllTransforms=false&shippedProposals=false&circleciRepo=&evaluate=false&fileSize=false&timeTravel=false&sourceType=module&lineWrap=true&presets=react&prettier=false&targets=&version=7.10.2&externalPlugins=
: 바벨 <> Javascript 변환하기
