machinecat520
/
zj-Exercise


			
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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        /*
        编写程序，由键盘输入三个整数，分别存入变量num1、num2、num3
        对他们进行排序，并且从小到大输出
        */

        //获取用户输入的三个数
        /*
        prompt()函数的返回值是String类型的
        */
        var num1 = +prompt("请输入第一个数：");
        var num2 = +prompt("请输入第二个数：");
        var num3 = +prompt("请输入第三个数：");
        alert(typeof num1);
        alert(num1+","+num2+","+num3);
        //找到三个数中最小的数
        if(num1 < num2 && num1 < num3 ){
            //num1最小，比较num2和num3
            if(num2 < num3){
                //num1 num2 num3
                alert(num1+","+num2+","+num3);
            }else{
                //num1 num3 num2
                alert(num1+","+num3+","+num2);
            }

        }else if(num2 < num1 && num2 < num3){
            //num2最小，比较num1和num3
            if(num1 < num3){
                //num2 num1 num3
                alert(num2+","+num1+","+num3);
            }else{
                //num2 num3 num1
                alert(num2+","+num3+","+num1);
            }
            
        }else{
            //num3最小，比较num1和num2
            if(num1 < num2){
                //num3 num1 num2
                alert(num3+","+num1+","+num2);
            }else{
                //num3 num2 num1
                alert(num3+","+num2+","+num1);
            }
        }


    </script>
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