// 1~100のランダムな値を得る const getRandomScore = (): number => Math.floor(Math.random() * 101); const value = getRandomScore(); // 以下の様に書けば視覚的にすぐに分かる if (20 <= value && value <= 80) { console.log(`値は範囲内です:${value}`); } else { console.log(`値は範囲外です:${value}`); }
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