JS基础：数组for循环年龄案例

 <script>
        let eage1 = []//定义一个空数组接受年龄
        for (let i = 1; i <= 5; i++) {
            let eage = prompt(`请输入第${i}个年龄`)//每次循环输入
            if (eage > 0 && eage < 100) {//满足0-100
                eage1.push(eage)//放入数组
            }
        }
        //1、依次打印数组输入进去的年龄
        document.write(eage1 + `<br>`)
        //2、打印所有成年人年龄
        for (let i = 0; i < eage1.length; i++) {
            if (eage1[i] > 18) {
                document.write(eage1[i] + `<br>`)
            }
        }
        //3、打印所有人总年龄
        let sum = 0
        for (let j = 0; j < eage1.length; j++) {
            sum += +eage1[j]
        }
        document.write(sum + `<br>`)
        //4、打印出所有人的平均年龄
        let average = 0
        average = sum / eage1.length
        document.write(average + `<br>`)
        //5、打印出年龄最大和最小的
        let max = eage1[0], min = eage1[2]
        for (let n = 0; n < eage1.length; n++) {
            if (eage1[n] > max) {
                max = eage1[n]
            }
            if (eage1[n] < min) {
                min = eage1[n]
            }
        }
        document.write(`输入年龄中最大的为${max}<br>`)
        document.write(`输入年龄中最小的为${min}<br>`)
    </script>