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<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>综合案例--简易ATm机</title>
</head><body><script>let money = 100while (true) {let re = +prompt(`请您选择操作:1.存钱2.取钱3.查看余额4.退出`)if (re === 4) {break}switch (re) {case 1://存钱let cun = +prompt('请输入存款金额')money += cunbreakcase 2://存钱let qu = +prompt('请输入取款金额')money -= qubreakcase 3://查询余额alert(`您的银行卡余额是${money}`)break}}</script>
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