vue如何使用rules对表单字段进行校验

1、在代码中，添加属性：:rule

 <Form ref="loginForm" :model="form" :rules="rules" @keydown.enter.native="handleSubmit" class="form-con">
                        <FormItem prop="phone">
                            <Input v-model="form.phone" prefix="md-person" placeholder="请输入您的手机号" size="large" class="login-form-input" :maxlength="11"></Input>
                        </FormItem>
                        <FormItem prop="password">
                            <Input type="password" v-model="form.password" prefix="md-lock" placeholder="请输入您的密码" size="large" class="login-form-input" :maxlength="100"></Input>
                        </FormItem>
                        <FormItem prop="code">
                            <Input v-model="form.code" placeholder="请输入验证码" prefix="ios-barcode" size="large" class="login-form-input" :maxlength="4"></Input>
                            <img @click="refLoginImg" :class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="loginImgSrc" class="login-img"/>
                        </FormItem>
                        <FormItem>
                            <Button @click="handleSubmit" :loading="submitLoading" type="info" long size="large" class="login-btn" icon="md-log-in">
                                <span v-if="!submitLoading">立即登录</span>
                                <span v-else>正在登录，请稍候...</span>
                            </Button>
                        </FormItem>
                    </Form>

2.新建一个文件（validate.js）定义验证规则

/** 这个文件只允许放表单验证方法 **///验证手机号export function isPhone(rule, value, callback) {    if (!value) {        return callback(new Error('输入不可以为空'));
    }    var pattern = /^1[34578]\d{9}$/
    if(pattern.test(value)){        return callback()
    }    return callback(new Error('输入的手机号错误'))
}

3、在页面(xx.vue)中引入验证规则定义的文件，并在export default中定义rule规则，使用语法：{validator:验证方法,trigger:验证触发} validator

 rules: {
                    phone: [
                        { required: true, message: '手机号不能为空', trigger: 'blur' },
                        { type: 'string', min: 11, message: '手机号不允许小于11位', trigger: 'blur' },
                        { validator: isPhone, trigger: 'blur' },
                    ],
                    password: [
                        { required: true, message: '密码不能为空', trigger: 'blur' },
                        { type: 'string', min: 6, message: '密码不允许小于6位', trigger: 'blur' },
                    ],
                    code: [
                        { required: true, message: '验证码不能为空', trigger: 'blur' },
                        { type: 'string', min: 4, message: '验证码必须是4位', trigger: 'blur' },
                    ],
                },

作者：sirai
链接：https://www.jianshu.com/p/d8f0eb5f942d