nayunhwan

// 1~90 번호 생성기
const subjectNumbers = Array.from(Array(90).keys()).map((number) => number + 1);
const timetableGenerator = () => {
  // 빈 배열 생성기 -> 할당되지 않은 과목번호는 0
  const times = new Array(7);
  for (let i = 0; i < times.length; i++) {
    times[i] = Array.from(new Array(10)).map(() => 0);
  }
  return times;
};

nayunhwan

function create_UUID(){
    var dt = new Date().getTime();
    var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        var r = (dt + Math.random()*16)%16 | 0;
        dt = Math.floor(dt/16);
        return (c=='x' ? r :(r&0x3|0x8)).toString(16);
    });
    return uuid;
}

nayunhwan

{
  "workbench.colorTheme": "Atom One Dark",
  "atomKeymap.promptV3Features": true,
  "editor.multiCursorModifier": "ctrlCmd",
  "editor.tabSize": 2,
  "editor.formatOnSave": true,
  "editor.formatOnPaste": true,
  "prettier.eslintIntegration": true,
  "eslint.autoFixOnSave": true,
  "tslint.autoFixOnSave": true,

nayunhwan

ReactDOM.render(
  <Clock />,
  document.getElementById('root')
);

nayunhwan

function Clock(props) {
  return (
    <div>
      <h1>Hello, world!</h1>
      <h2>It is {props.date.toLocaleTimeString()}.</h2>
    </div>
  );
}

function tick() {

nayunhwan

function Comment(props) {
  return (
    <div className="Comment">
      <div className="UserInfo">
        <img className="Avatar"
          src={props.author.avatarUrl}
          alt={props.author.name}
        />
        <div className="UserInfo-name">
          {props.author.name}

nayunhwan

function Welcome(props) {
  return <h1>Hello, {props.name}</h1>;
}

function App() {
  return (
    <div>
      <Welcome name="Sara" />
      <Welcome name="Cahal" />
      <Welcome name="Edite" />

nayunhwan

function Welcome(props) {
  return <h1>Hello, {props.name}</h1>;
}

function App() {
  return (
    <div>
      <Welcome name="Sara" />
      <Welcome name="Cahal" />
      <Welcome name="Edite" />

nayunhwan

class Welcome extends React.Component {
  render() {
    return <h1>Hello, {this.props.name}</h1>;
  }
}

nayunhwan

// This is index.js written by JSX

const element = <h1>Hello, world</h1>;
ReactDOM.render(
  element,
  document.getElementById('root')
);