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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <section id="type">
  <h1>TypeScript事始め</h1>
  <p>CodePen Settingの旅、JS編第3回。TypeScriptは静的型付け、クラス定義、ES対応などの特徴があるそうな。<br>
CoffeeScriptと違ってJSの延長上の記法なので読み書きしやすそう。</p>
  <section id="hello">
    <h2>特徴</h2>
    <ul>
      <li>変数に「:」で静的型付けができる。</li>
      <li>関数内の引数も「:」で静的型付け</li>
      <li>アロー関数式「=>」が使える</li>
      <li>クラス定義ができる</li>
    </ul>
    <p>素のJSでもそのまま行けるようなのでJSからの書き換えもしやすそう。</p>
  </section>
  <div><button id="btn">ここ押せワンワン</button>
</section>
            
          
!

CSS

            
              #btn {
  display: inline-block;
padding: 1em;
background: #666;
border-radius: 5px;
  color: #fff;
}

#btn:hover {
  opacity: 0.7;
  cursor : pointer;
}
            
          
!

JS

            
              /*関数
function hellow(){
window.alert('hellow TypeScript');
window.alert('こんにちは、型スクリプト');
window.alert('おしまい');
}*/

/*アロー関数*/
var hellow = () => {
window.alert('hellow TypeScript');
window.alert('こんにちは、型スクリプト');
window.alert(title + 'は第' + num + '回です。');
window.alert('おしまい');
}



/*変数
var btn = document.getElementById('btn');*/

/*変数(型付け)*/
var btn:object;
btn = document.getElementById('btn');

var title:string;
title = 'JS編';

var num:number;
num = 3;

/*イベント*/
btn.addEventListener('click', hellow, false);
            
          
!
999px

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