父组件

<template>  
    <view>  
        <md-from>  
            <md-input title="小区" :verifyFc="verifyFc"></md-input>  
            <!-- <md-select></md-select> -->  
        </md-from>  
        <test :ves="verifyFc"></test>  
    </view>  
</template>  

<script>  
    import mdInput from "@/components/md_ui/input/input.vue";  
    import mdSelect from "@/components/md_ui/select/select.vue";  
    import mdFrom from '@/components/md_ui/form/form.vue'  
    import test from '@/components/test.vue'  

    export default {  
        name:'takeBoxOrderFrom',  
        data() {  
            return {  
                verifyFc:[  
                    (val)=>!!val.length||'空',  
                ]  
            };  
        },  
        components:{mdInput,mdFrom,mdSelect,test},  
    }  
</script>  

<style lang="scss">  

</style>  

子组件

props: {  
...  
    verifyFc:{  
        default:[  
            (val)=>!!val.length||'不能为空'  
        ]  
    },  
},  

onReady(){  
    console.log(this.verifyFc);  
},

不是很懂为什么会出现这个问题