0511JS流程练习

var one = prompt("请输入第一个数");
var two = prompt("请输入第二个数");
var three = prompt("请输入第三个数");
var big = one > two ? one > three ? one : three : two > three ? two : three;
alert(big);

var he = 0;
for(var shu = 1;shu <= 100;shu++){
    he = he + shu;
}
alert(he);

var shuchu = "" ;
for(var seven = 7;seven <= 100;seven = seven + 10){
    shuchu = shuchu + "." + seven;
}
for(var seven = 7;seven <= 100;seven = seven + 7){
    shuchu = shuchu + "." + seven;
}
for(var seven = 70;seven <= 79;seven++){
    shuchu = shuchu + "." + seven;
}
alert(shuchu);

var password = prompt("请输入密码");
for (var cishu = 0;cishu <=2;cishu++) {
    if(password == 123){
        var amount = prompt("请输入取款金额");
    while(amount < 100 || amount >1000 || (amount % 100 != 0)){
        amount = prompt("金额错误，请重新输入取款金额");
    }
    alert("您取出了"+amount+"元");
    alert("交易完成，请取卡");
    break;
}
else if(cishu == 2){
    alert("密码输入错误三次，请取卡");
    }
    else{
    password = prompt("密码错误，请重新输入密码");
    }
}

var str = "";
for(var shu = 0;shu <= 100; shu++){
    if(shu%2 == 0){
    str = str + "、" + shu;
    }
}
alert(str);

var n = prompt("请输入一个正整数");
var b = 0;
for(var a = 0;a <= n;a++){
    b = b + a;
}
alert(b)