React表单验证-------formik+yup

vue element-ui vant-ui vue vee-validate 组件库 纯原生 Input formik

import React, { useState } from 'react'
// import Icon from '@/components/Icon'
import styles from './index.module.scss'
import NavBar from '@/components/NavBar'
import Input from '@/components/Input'
import { useFormik } from 'formik'
// 表单验证的包
import * as Yup from 'yup'
import classNames from 'classnames'
import { useDispatch } from 'react-redux'
import { sendCode, login } from '@/store/action/login'
import { Toast } from 'antd-mobile'
import { useHistory } from 'react-router'
export default function Login() {
  const history = useHistory()
  const dispatch = useDispatch()
  // 发送验证码之后倒计时点击按钮
  const [time, setTime] = useState(0)
  // 点击发送验证码请求
  const onExtraClick = async () => {
    if (time > 0) return
    if (!/^1[3-9]\d{9}$/.test(mobile)) {
      formik.setTouched({
        mobile: true,
      })
      return
    }
    await dispatch(sendCode(mobile))
    Toast.success('获取验证码成功', 1)
    // 开启倒计时
    setTime(60)

    let timeId = setInterval(() => {
      setTime((time) => {
        if (time === 1) {
          clearInterval(timeId)
        }
        return time - 1
      })
    }, 1000)
  }
  const formik = useFormik({
    initialValues: {
      mobile: '',
      code: '',
    },
    // 当表单提交时会触发
    async onSubmit(values) {
      await dispatch(login(values))
      Toast.success('登陆成功')
      history.push('/home')
    },
    validationSchema: Yup.object({
      mobile: Yup.string()
        .required('手机号不能为空')
        .matches(/^1[3-9]\d{9}$/, '手机号格式错误'),
      code: Yup.string()
        .required('验证码不能为空')
        .matches(/^\d{6}$/, '手机号格式错误'),
    }),
    //原生书写很麻烦
    // validate(values) {
    //   const errors = {}
    //   if (!values.mobile) {
    //     errors.mobile = '手机号不能为空'
    //   }
    //   if (!values.code) {
    //     errors.code = '验证码不能为空'
    //   }
    //   return errors
    // },
  })
  const {
    values: { mobile, code },
    handleChange,
    handleSubmit,
    handleBlur,
    touched,
    errors,
    isValid,
  } = formik
  return (
    <div className={styles.root}>
      <NavBar>登录</NavBar>
      <div className="content">
        {/* 标题 */}
        <h3>短信登录</h3>
        <form onSubmit={handleSubmit}>
          {/* 手机号输入框 */}
          <div className="input-item">
            <Input
              maxLength={11}
              className="input"
              name="mobile"
              placeholder="请输入手机号"
              onChange={handleChange}
              onBlur={handleBlur}
              value={mobile}
              autoComplete="off"
            />
            {touched.mobile && errors.mobile ? (
              <div className="validate">{errors.mobile}</div>
            ) : null}
          </div>
          {/* 短信验证码输入框 */}
          <div className="input-item">
            <Input
              placeholder="请输入验证码"
              extra={time === 0 ? '获取验证码' : time + 's后获取'}
              maxLength={6}
              onExtraClick={onExtraClick}
              onChange={handleChange}
              name="code"
              value={code}
              onBlur={handleBlur}
              autoComplete="off"
            ></Input>
            {touched.code && errors.code ? (
              <div className="validate">{errors.code}</div>
            ) : null}
          </div>
          {/* 登录按钮 */}
          <button
            type="submit"
            className={classNames('login-btn', { disabled: !isValid })}
            disabled={!isValid}
          >
            登录
          </button>
        </form>
      </div>
    </div>
  )
}