使用Array和for cycle的BMI计算器，包含名称、体重、高度、BMI和文本

// 定义一个数组，包含多个人的信息
var people = [
  { name: "张三", weight: 60, height: 1.7 },
  { name: "李四", weight: 70, height: 1.8 },
  { name: "王五", weight: 80, height: 1.75 }
];

// 定义一个空数组，用于存储每个人的BMI和文本提示
var results = [];

// 使用for循环遍历每个人的信息，并计算BMI
for (var i = 0; i < people.length; i++) {
  var person = people[i];
  var bmi = person.weight / (person.height * person.height);
  
  // 根据BMI值给出相应的文本提示
  var text = "";
  if (bmi < 18.5) {
    text = "体重过轻";
  } else if (bmi >= 18.5 && bmi < 24) {
    text = "体重正常";
  } else if (bmi >= 24 && bmi < 28) {
    text = "超重";
  } else {
    text = "肥胖";
  }
  
  // 将BMI和文本提示添加到结果数组中
  results.push({
    name: person.name,
    weight: person.weight,
    height: person.height,
    bmi: bmi.toFixed(2),
    text: text
  });
}

// 输出每个人的BMI和文本提示
for (var i = 0; i < results.length; i++) {
  var result = results[i];
  console.log(result.name + "的BMI为" + result.bmi + "，" + result.text);
}