markdown スコープ

Posted 2021-05-06

const a = "i'm a";

console.log(a); // "i'm a"

function func1() {
  const a = 'second a';
  console.log(a); // "second a"
  
  function func2() {
    let a;
    console.log(a); // undefined
  }
  
  func2();
}

func1();

JS-スコープ
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A [Pen](https://codepen.io/taquaki/pen/ZJJrRw) by [Takaaki Sato](https://codepen.io/taquaki) on [CodePen](https://codepen.io).

[License](https://codepen.io/taquaki/pen/ZJJrRw/license).