template

<el-form
        ref="form"
        :model="ruleForm"
        :rules="rules"
        label-width="120px"
        class="demo-ruleForm"
>
    <el-form-item label="用户名" prop="username">
        <el-input v-model="ruleFormRef.username.value" placeholder="用户名/手机号/邮箱" clearable></el-input>
    </el-form-item>
    <el-form-item label="密码" prop="password">
        <el-input v-model="ruleFormRef.password.value"  show-password placeholder="密码" clearable></el-input>
    </el-form-item>
</el-form>
<el-button type="primary" @click="login">登录</el-button>
<el-button type="text" @click="goRegister">去注册</el-button>

ts

const ruleForm = reactive({
    username: '',
    password: '',
})
const ruleFormRef = toRefs(ruleForm)
const rules = reactive({
    username: [
        {
            required: true,
            message: '请输入用户名/手机号/邮箱',
            trigger: 'change',
        },],
    password: [
        {
            required: true,
            message: '请输入密码',
            trigger: 'change',
        },],
})
const form = ref(null);
const login = () => {
    const myForm = form.value as any;
    myForm.validate((valid: boolean) => {
        if (valid) {
            loginSubmit(ruleForm)
        }
    })
}