为什么这段函数没有调用但却自动执行了？麻烦各位解答下，谢谢
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<html lang="en">
<head>
<meta charset="UTF-8" />
<meta
name="viewport"
content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<script>
//1.弹出用户名和密码框
//2.拿着用户输入的用户信息取已注册的数组进行查找
//3.找到即登录成功，没找到即登录失败
//1.已注册用户信息和现有用户信息
let loginList = [
{ userName: 'admin', password: 'admin321' },
{ userName: 'zhangsan', password: 'zs321' },
{ userName: 'lisi', password: 'ls321' },
{ userName: 'yyqx', password: 'yyqx321' },
]
let userInfo = {
token1: {
city: '杭州',
money: '1000w',
sex: '女',
userName: 'admin',
password: 'admin321',
},
token2: {
city: '北京',
money: '1100w',
sex: '女',
userName: 'zhangsan',
password: 'zs321',
},
token3: {
city: '北京',
money: '800w',
sex: '男',
userName: 'lisi',
password: 'ls321',
},
token4: {
city: '天津',
money: '600w',
sex: '男',
userName: 'yyqx',
password: 'yyqx321',
},
}
//功能函数一、 查找函数
// userFind()
function userFind() {
let isFind = false
const uname = prompt('请输入登录用户名')
const password = prompt('请输入登录密码')
for (let i = 0; i < loginList.length; i++) {
if (loginList[i].userName === uname && loginList[i].password === password) {
isFind = true
alert('登录成功')
const token = `token${Math.floor(Math.random() * 4 + 1)}`
alert(`
地址：${userInfo[token].city}
存款：${userInfo[token].money}
性别：${userInfo[token].sex}
姓名：${uname}
密码：${password}
`)
break
}
}
//利用返回值的值来为外界函数调用
return { isFind: isFind, uname: uname, password: password }
}
if (!userFind().isFind) {
alert('登录失败')
}
</script>
</body>
</html>
