用javascript实现编写计算身体质量指数bmi =体重身高2的函数bmi。如果bmi = 185返回体重过轻如果bmi = 250返回正常如果bmi = 300返回超重如果bmi 30返回肥胖

function bmi(weight, height) { var bmi = weight / (height * height); if (bmi <= 18.5) { return "体重过轻"; } else if (bmi <= 25.0) { return "正常"; } else if (bmi <= 30.0) { return "超重"; } else { return "肥胖"; } }

// 示例 console.log(bmi(60, 1.7)); // "正常" console.log(bmi(70, 1.6)); // "超重" console.log(bmi(80, 1.8)); // "肥胖" console.log(bmi(50, 1.6)); // "体重过轻"