回答編集履歴
1
960pxを含んでいたので修正
answer
CHANGED
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@@ -6,4 +6,12 @@
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6
6
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```
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7
7
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window.matchMedia()
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9
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[https://developer.mozilla.org/ja/docs/Web/API/Window/matchMedia](https://developer.mozilla.org/ja/docs/Web/API/Window/matchMedia)
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9
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[https://developer.mozilla.org/ja/docs/Web/API/Window/matchMedia](https://developer.mozilla.org/ja/docs/Web/API/Window/matchMedia)
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-- 16:56 960pxを含んでいたので訂正。
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12
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```JavaScript
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14
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if (!window.matchMedia("(max-width: 960px)").matches) {
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15
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// 処理。
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16
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}
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```
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