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functionsのadd関数の例を修正 #411

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aster-void merged 3 commits into from
Oct 1, 2023
Merged

functionsのadd関数の例を修正 #411

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8ef83e9
functionsのadd関数の例を修正
aster-void Oct 1, 2023
3b9ba4e
rewrite example's explanation
aster-void Oct 1, 2023
e77b45a
fixed term link and added ;
aster-void Oct 1, 2023
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7 changes: 5 additions & 2 deletions docs/1-trial-session/09-functions/index.md
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Expand Up @@ -51,13 +51,16 @@ greet("morning", "佐藤");

```javascript
function add(a, b) {
return a + b;
const sum = a + b;
return sum;
}

document.write(add(3, 4));
```

上の例の 4 行目で、<Term type="javascriptExpression">式</Term> `add(3, 4)` が<Term type="javascriptEvaluation">評価</Term>されると、 `a = 3, b = 4` として `add` <Term type="javascriptFunction">関数</Term>が実行されます。`add`<Term type="javascript">関数</Term>の中で<Term type="javascriptStatement">文</Term> `return a + b;` が実行されると、<Term type="javascriptExpression">式</Term> `a + b` が<Term type="javascriptEvaluation">評価</Term>され、`7` になります。これにより、 `add` <Term type="javascriptFunction">関数</Term>は `7` を<Term type="javascriptReturn">返し</Term>、<Term type="javascriptExpression">式</Term> `add(3, 4)` の<Term type="javascriptEvaluation">評価</Term>結果は `7` となります。
上の例の 6 行目で、<Term type="javascriptExpression">式</Term> `add(3, 4)` が<Term type="javascriptEvaluation">評価</Term>されると、 `a = 3, b = 4` として `add` <Term type="javascriptFunction">関数</Term>が実行されます。`add`<Term type="javascript">関数</Term>の中で<Term type="javascriptStatement">文</Term> `const sum = a + b;` が実行されると、<Term type="javascriptExpression">式</Term> `a + b` が<Term type="javascriptEvaluation">評価</Term>され、`7` になります。これにより、`sum` に`7`が代入されます。
次の行 `return sum;` で `add` <Term type="javascriptFunction">関数</Term>は <Term type="javascriptVariable">変数</Term> `sum` を<Term type="javascriptEvaluation">評価</Term>した結果である、`7` を<Term type="javascriptReturn">返します。</Term>
そして<Term type="javascriptExpression">式</Term> `add(3, 4)` の<Term type="javascriptEvaluation">評価</Term>結果が `7` となります。

<video src={returnValueVideo} controls autoPlay muted loop />

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