使用javascript函数编写简单银行取钱存钱流程

具体代码如下所述：

const readline = require(\'readline-sync\')//引用readline-sync
let arr = [[\'zhang\', \'123\', 2000], [\'yang\', \'123456\', 3000]];
//登陆 
let add = function () {
  let s = 2;//输入错误的次数
  while (true) {
    console.log(\'请输入用户名：\');
    let user = readline.question();
    console.log(\'请输入密码：\');
    let password = readline.question();
    for (let i = 0; i < arr.length; i++) {   
      if (user === arr[i][0] && password === arr[i][1]) {
        console.log(\'欢迎你，登陆成功\');
        mean(i);
        return;
      }
    }
    //输入不正确，超过三次
    if (s != 0) {
      console.log(`密码或账户有误，你还有${s}次机会，请重新输入！`);
      s--;
    } else {
      console.log(\'对不起，账户锁定！\');
      break;
    }
  }
}
//存款
let fn1 = function (i) {
  console.log(\'存款\');
  console.log(\'请输入存款金额：\');
  let cunkuan = readline.question() - 0;
  arr[i][2]+= cunkuan;
  console.log(\'系统正在为你存钱请稍等。。。。。\\n存钱成功您当前余额为\' + arr[i][2]);
}
//取款
let fn2 = function (i) {
  console.log(\'取款\');
  console.log(\'请输入取款金额：\');
  let qukuan = readline.question() - 0;
  if (qukuan > arr[i][2]) {
    console.log(\'对不起你的余额不足！，请重新输入金额或者退出\');
  } else {
    arr[i][2] = arr[i][2] - qukuan;
    console.log(\'正在为你取钱。。。。。\\n您当前余额为：\' + arr[i][2]);
  }
}
//查看
let fn3 = function (i) {
  console.log(\'查看\');
  console.log(\'正在查询。。。。\\n您当前的余额为：\' + arr[i][2]);
}
//退出
let fn4 = function () {
  console.log(\'退出\');
  console.log(\'欢迎你下次使用！\');
}
//流程
let mean = function (i) {
  for (let yewu = 1; yewu >= 1; yewu++) {
    console.log(\'请选择业务：\\n1.存款： \\n2.取款： \\n3.查看： \\n4.退出：\');
    let yewu = readline.question() - 0;
    switch (yewu) {
      case 1:
        fn1(i);
        continue;
      case 2:
        fn2(i);
        continue;
      case 3:
        fn3(i);
        continue;
      case 4:
        fn4();
        return;
    }break;
  }
}
add();

以上所述是小编给大家介绍的使用javascript函数编写简单银行取钱存钱流程，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时回复大家的！