Vue3自定义全局指令

自定义的指令功能：根据传参判断是否显隐功能按钮

utils/directives/auth.js 判断方法自己去实现，这里就不贴代码了

代码语言：javascript复制

import useStore from "@/store"

export default (app) => {
    app.directive('auth', {
        mounted(el, binding) {
            hasAuth(el, binding)
        }
    })
}

const hasAuth = (el, binding) => {
    const { user } = useStore()
    const { value } = binding
    if (!value) return
    if (!user.hasPermission(value)) {
        el.parentNode?.removeChild(el)
    }
}

把指令统一导出 utils/directives/index.js

代码语言：javascript复制

import auth from './auth'

export default (app) => {
    auth(app)
}

main.js

代码语言：javascript复制

const app = createApp(App)
import directive from "@/utils/directives"
directive(app)

使用

代码语言：javascript复制

<el-button v-auth="'user_xxxx'">功能按钮</el-button>

app binding directive el vue3

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