「関数」の節の演習問題2の解答を修正 (#948)

chvmvd · web-flow · commit 796a11d26dd3 · 2026-04-05T20:14:15.000+09:00
diff --git a/docs/1-trial-session/09-functions/_samples/mobile-phone-bill/script.js b/docs/1-trial-session/09-functions/_samples/mobile-phone-bill/script.js
@@ -1,8 +1,9 @@
 function calculateCost(monthlyDataUsage) {
   if (monthlyDataUsage < 5.0) {
     return monthlyDataUsage * 600;
+  } else {
+    return 3000;
   }
-  return 3000;
 }
 
 document.write(calculateCost(3.5));
diff --git a/docs/1-trial-session/09-functions/index.mdx b/docs/1-trial-session/09-functions/index.mdx
@@ -193,8 +193,9 @@ document.write(calculateCost(3.5));
 function calculateCost(monthlyDataUsage) {
   if (monthlyDataUsage < 5.0) {
     return monthlyDataUsage * 600;
+  } else {
+    return 3000;
   }
-  return 3000;
 }
 
 document.write(calculateCost(3.5));

Original file line number	Diff line number	Diff line change
`@@ -1,8 +1,9 @@`
`1`	`1`	`function calculateCost(monthlyDataUsage) {`
`2`	`2`	`if (monthlyDataUsage < 5.0) {`
`3`	`3`	`return monthlyDataUsage * 600;`
	`4`	`+ } else {`
	`5`	`+ return 3000;`
`4`	`6`	`}`
`5`		`- return 3000;`
`6`	`7`	`}`
`7`	`8`
`8`	`9`	`document.write(calculateCost(3.5));`
Original file line number	Diff line number	Diff line change
`@@ -193,8 +193,9 @@ document.write(calculateCost(3.5));`
`193`	`193`	`function calculateCost(monthlyDataUsage) {`
`194`	`194`	`if (monthlyDataUsage < 5.0) {`
`195`	`195`	`return monthlyDataUsage * 600;`
	`196`	`+ } else {`
	`197`	`+ return 3000;`
`196`	`198`	`}`
`197`		`- return 3000;`
`198`	`199`	`}`
`199`	`200`
`200`	`201`	`document.write(calculateCost(3.5));`