使用iview框架，如何进行输入框或者按钮的关联验证

iview框架的Form 组件基于 async-validator 实现数据验证,给 Form 设置属性 rules，同时给需要验证的 FormItem 设置属性 prop 指向对应字段即可。

简单的验证

<Form ref="formValidate" :model="formValidate" :rules="ruleValidate" :label-width="80">
        <FormItem label="姓名" prop="name">
            <Input v-model="formValidate.name" placeholder="输入你的名字"></Input>
        </FormItem>
        <FormItem label="邮箱" prop="mail">
            <Input v-model="formValidate.mail" placeholder="输入邮箱地址"></Input>
        </FormItem>
        <FormItem label="城市" prop="city">
            <Select v-model="formValidate.city" placeholder="选择城市">
                <Option value="beijing">北京</Option>
                <Option value="shanghai">上海</Option>
                <Option value="shenzhen">深圳</Option>
            </Select>
        </FormItem>
        <FormItem label="性别" prop="gender">
            <RadioGroup v-model="formValidate.gender">
                <Radio label="male">男</Radio>
                <Radio label="female">女</Radio>
            </RadioGroup>
        </FormItem>
        <FormItem label="爱好" prop="interest">
            <CheckboxGroup v-model="formValidate.interest">
                <Checkbox label="Eat"></Checkbox>
                <Checkbox label="Sleep"></Checkbox>
                <Checkbox label="Run"></Checkbox>
                <Checkbox label="Movie"></Checkbox>
            </CheckboxGroup>
        </FormItem>
        <FormItem label="个人简介" prop="desc">
            <Input v-model="formValidate.desc" type="textarea" :autosize="{minRows: 2,maxRows: 5}" placeholder="请输入..."></Input>
        </FormItem>
        <FormItem>
            <Button type="primary" @click="handleSubmit('formValidate')">提交</Button>
            <Button @click="handleReset('formValidate')" style="margin-left: 8px">重置</Button>
        </FormItem>
</Form>

export default {
        data () {
            return {
                formValidate: {
                    name: '',
                    mail: '',
                    city: '',
                    gender: '',
                    interest: [],
                    desc: ''
                },
                ruleValidate: {
                    name: [
                        { required: true, message: '不能为空', trigger: 'blur' }
                    ],
                    mail: [
                        { required: true, message: '邮箱不能为空', trigger: 'blur' },
                        { type: 'email', message: '格式错误', trigger: 'blur' }
                    ],
                    city: [
                        { required: true, message: '请选择城市', trigger: 'change' }
                    ],
                    gender: [
                        { required: true, message: '请选择性别', trigger: 'change' }
                    ],
                    interest: [
                        { required: true, type: 'array', min: 1, message: '请选择兴趣爱好', trigger: 'change' },
                        { type: 'array', max: 2, message: '最多选择两项', trigger: 'change' }
                    ]，
                    desc: [
                        { required: true, message: '请输入个人简介', trigger: 'blur' },
                        { type: 'string', min: 20, message: '不能少于20个字符', trigger: 'blur' }
                    ]
                }
            }
        },
        methods: {
            handleSubmit (name) {
                this.$refs[name].validate((valid) => {
                    if (valid) {
                        //验证成功后执行的方法
                    } else {
                        //验证失败后执行的方法
                    }
                })
            },
            handleReset (name) {
                this.$refs[name].resetFields();
            }
        }
}

下面是两个输入框之间关联的例子，就拿最近做的一个项目举例吧,async-validator有一个字段validator，可以自定义验证规则

<Form ref="formRecord" :model="formRecord" label-position="right" :rules="ruleRecord">

　　<FormItem prop="c6">

　　　　<Input type="text" v-model="formRecord.c6"></Input>

　　</FormItem>

　　<FormItem prop="c7">

　　　　<Input type="text" v-model="formRecord.c7"></Input>

　　</FormItem>

</Form>

　let checkc7 = (rule, value, callback) => {

　　let c7 = parseFloat(this.formRecord.c7)

　　if (c7 < (c6 * 0.95)) {

　　　　callback("实测制冷量不应小于额定制冷量的95%")

　　} else {

　　callback()

　　}

  }

ruleRecord:{
    c6: [
          {
            required: true,
            message: '不能为空'
          }
    ],
    c7: [
          {
            required: true,
            message: '不能为空'
          },
          {
            validator: checkc7,
            trigger: 'blur'
          }
    ]
}