vant+veeValiDate表单验证的使用

npm install vee-validate --save

import { Validator } from 'vee-validate'
const customizeVal = () => {
let formatFileSize = function (size) {
let units = ['Byte', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
let threshold = 1024
size = Number(size) * threshold
let i = size === 0 ? 0 : Math.floor(Math.log(size) / Math.log(threshold))
return (size / Math.pow(threshold, i)).toFixed(2) * 1 + ' ' + units[i]
}
let fieldName = '' // 原来的i18n的fieldName会显示绑定的name值，就是英文，实际项目中不需要
console.log(fieldName)
Validator.localize('zh_CN', {
name: 'zh_CN',
attributes: {},
messages: {
_default: () => `${fieldName}无效`,
after: (field, [target]) => `${fieldName}必须在${target}之后`,
alpha_dash: () => `${fieldName}能够包含字母数字字符、破折号和下划线`,
alpha_num: () => `${fieldName}只能包含字母数字字符`,
alpha_spaces: () => `${fieldName}只能包含字母字符和空格`,
alpha: () => `${fieldName}只能包含字母字符`,
before: (field, [target]) => `${fieldName}必须在${target}之前`,
between: (field, [min, max]) => `${fieldName}必须在${min}与${max}之间`,
confirmed: (field, [confirmedField]) =>
`${fieldName}不能和${confirmedField}匹配`,
credit_card: () => `${fieldName}格式错误`,
date_between: (field, [min, max]) => `${fieldName}必须在${min}和${max}之间`,
date_format: (field, [format]) => `${fieldName}必须符合${format}格式`,
decimal: (field, [decimals = '*'] = []) =>
`${fieldName}必须是数字，且能够保留${
decimals === '*' ? '' : decimals
}位小数`,
digits: (field, [length]) =>
`${fieldName}必须是数字，且精确到${length}位数`,
dimensions: (field, [width, height]) =>
`${fieldName}必须在${width}像素与${height}像素之间`,
email: () => `${fieldName}不是一个有效的邮箱`,
ext: () => `${fieldName}不是一个有效的文件`,
image: () => `${fieldName}不是一张有效的图片`,
included: () => `${fieldName}不是一个有效值`,
integer: () => `${fieldName}必须是整数`,
ip: () => `${fieldName}不是一个有效的地址`,
length: (field, [length, max]) => {
if (max) {
return `${fieldName}长度必须在${length}到${max}之间`
}
return `${fieldName}长度必须为${length}`
},
max: (field, [length]) => `${fieldName}不能超过${length}个字符`,
max_value: (field, [max]) => `${fieldName}必须小于或等于${max}`,
mimes: () => `${fieldName}不是一个有效的文件类型`,
min: (field, [length]) => `${fieldName}必须至少有${length}个字符`,
min_value: (field, [min]) => `${fieldName}必须大于或等于${min}`,
excluded: () => `${fieldName}不是一个有效值`,
numeric: () => `${fieldName}只能包含数字字符`,
regex: () => `${fieldName}格式无效`,
required: () => `${fieldName}不能为空`,
size: (field, [size]) => `${fieldName}必须小于${formatFileSize(size)}`,
url: () => `${fieldName}不是一个有效的url`
}
})

// 手机号码验证
Validator.extend('mobile', {
getMessage: () => `请输入正确的手机号码`,
validate: value =>
value.length === 11 &&
/^(((13[0-9]{1})|(14[57]{1})|(15[012356789]{1})|(17[03678]{1})|(18[0-9]{1})|(19[89]{1})|(16[6]{1}))+\d{8})$/.test(
value
)
})
}
//暴露出去
export default customizeVal

import VeeValidate from 'vee-validate'
import customizeVal from '../src/components/common/validate'
Vue.use(VeeValidate)
Vue.use(customizeVal)

<van-field
v-model="username"
required
clearable
label="用户名"
placeholder="请输入用户名"
name="username"
v-validate="'required|max:10'"
:error-message="errors.first('username')"
:error="errors.has('username')"
/>
参数介绍：
name:用于区分验证，可自定义
v-validate：放验证规则，可放多个规则用 | 分开
errors.first('username'): 错误的文本提示
errors.has('username'): 验证的结果tue或者false

methods: {
login () {
this.$validator.validateAll().then(res => {
if (res) {
this.isLogin = true
axios.post(api.login, {
userName: this.username,
passWord: this.password
})
.then(res => {
if (res.data.message === true) {
Toast.success('登录成功!')
this.$router.push('/main')
} else if (res.data.message === false) {
Toast.fail('密码错误!')
} else if (res.data.message === '用户名不存在') {
Toast.fail('用户名不存在!')
}
})
.then(() => {
this.isLogin = false
})
}
})
}
},