Vue3:实现重置密码和校验功能

 表单样式

<template>
  <el-form
    ref="ruleFormRef"
    style="max-width: 600px"
    :model="ruleForm"
    status-icon
    :rules="rules"
    label-width="auto"
    class="demo-ruleForm"
  >
    <el-form-item label="Password" prop="pass">
      <el-input v-model="ruleForm.pass" type="password" autocomplete="off" />
    </el-form-item>
    <el-form-item label="Confirm" prop="checkPass">
      <el-input
        v-model="ruleForm.checkPass"
        type="password"
        autocomplete="off"
      />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" @click="submitForm(ruleFormRef)">
        Submit
      </el-button>
      <el-button @click="resetForm(ruleFormRef)">Reset</el-button>
    </el-form-item>
  </el-form>
</template>

校验规则

<script lang="ts" setup>
import { reactive, ref } from 'vue'
import type { FormInstance, FormRules } from 'element-plus'
import { useRouter } from 'vue-router';
const router = useRouter();
const ruleFormRef = ref<FormInstance>()

const validatePass = (rule: any, value: any, callback: any) => {
  if (value === '') {
    callback(new Error('Please input the password'))
  } else {
      const regex = /^[0-9A-Za-z]{8,20}$/;
        if (!regex.test(value)) {
            ElMessage.error('密码必须包含8到20个字符,且这些字符只能是数字(0-9)、大写字母    (A-Z)或小写字母(a-z)');
        }
    if (ruleForm.checkPass !== '') {
      if (!ruleFormRef.value) return
      ruleFormRef.value.validateField('checkPass')
    }
    callback()
  }
}
const validatePass2 = (rule: any, value: any, callback: any) => {
  if (value === '') {
    callback(new Error('Please input the password again'))
  } else if (value !== ruleForm.pass) {
    callback(new Error("Two inputs don't match!"))
  } else {
    callback()
  }
}

const ruleForm = reactive({
  pass: '',
  checkPass: '',
})

const rules = reactive<FormRules<typeof ruleForm>>({
  pass: [{ validator: validatePass, trigger: 'blur' }],
  checkPass: [{ validator: validatePass2, trigger: 'blur' }],
})

提交表单

const submitForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return
  formEl.validate((valid) => {
    if (valid) {
      console.log('submit!')
        //发送请求到后端
        // 密码修改后需要跳转到登录页面
         router.push('/login')
    } else {
      console.log('error submit!')
    }
  })
}

const resetForm = (formEl: FormInstance | undefined) => {
  if (!formEl) return
  formEl.resetFields()
}

通过表单校验，可以实现密码填写的判断是否合规，实现第二次输入密码，保证密码的准确性。