vue 封装全局filter

src

        filters

                index.js

const stateInfor = val =>{
    if(val == null || val == undefind || val == ""){
        return "--"
    }else{
        return val
    }
}

main.js

import filters from "@/filters/index"

Object.keys(filters).forEach(key => Vue.filter(key,filters[key]))