在最近的项目中,使用了bootstrap-vue来开发,然而在实际的开发过程中却发现这个UI提供的组件并不能打到我们预期的效果,像alert、modal等组件每个页面引入就得重复引入,并不像element那样可以通过this.$xxx来调用,那么问题来了,如何通过this.$xxx来调用起我们定义的组件或对我们所使用的UI框架的组件呢。
以bootstrap-vue中的Alert组件为例,分一下几步进行:
1、定义一个vue文件实现对原组件的再次封装
main.vue
<template> <b-alert class=\"alert-wrap pt-4 pb-4\" :show=\"isAutoClose\" :variant=\"type\" dismissible :fade=\"true\" @dismiss-count-down=\"countDownChanged\" @dismissed=\"dismiss\" > {{msg}} </b-alert> </template> <script> export default { /** * 参考: https://bootstrap-vue.js.org/docs/components/alert * @param {string|number} msg 弹框内容 * @param {tstring} type 弹出框类型 对应bootstrap-vue中variant 可选值有:\'primary\'、\'secondary\'、\'success\'、\'danger\'、\'warning\'、\'info\'、\'light\'、\'dark\'默认值为 \'info\' * @param {boolean} autoClose 是否自动关闭弹出框 * @param {number} duration 弹出框存在时间(单位:秒) * @param {function} closed 弹出框关闭,手动及自动关闭都会触发 */ props: { msg: { type: [String, Number], default: \'\' }, type: { type: String, default: \'info\' }, autoClose: { type: Boolean, default: true }, duration: { type: Number, default: 3 }, closed: { type: Function, default: null } }, methods: { dismiss () { this.duration = 0 }, countDownChanged (duration) { this.duration = duration } }, computed: { isAutoClose () { if (this.autoClose) { return this.duration } else { return true } } }, watch: { duration () { if (this.duration === 0) { if (this.closed) this.closed() } } } } </script> <style scoped> .alert-wrap { position: fixed; width: 600px; top: 80px; left: 50%; margin-left: -200px; z-index: 2000; font-size: 1.5rem; } </style>
这里主要就是对组件参数、回调事件的一些处理,与其他处理组件的情况没有什么区别
2、定义一个js文件挂载到Vue上,并和我们定义的组件进行交互
index.js
import Alert from \'./main.vue\' import Vue from \'vue\' let AlertConstructor = Vue.extend(Alert) let instance let seed = 1 let index = 2000 const install = () => { Object.defineProperty(Vue.prototype, \'$alert\', { get () { let id = \'message_\' + seed++ const alertMsg = options => { instance = new AlertConstructor({ propsData: options }) index++ instance.id = id instance.vm = instance.$mount() document.body.appendChild(instance.vm.$el) instance.vm.$el.style.zIndex = index return instance.vm } return alertMsg } }) } export default install
其主要思想是通过调用这个方法给组件传值,然后append到body下
3、最后需要在main.js中use一下
import Alert from \'@/components/alert/index\' Vue.use(Alert)
4、使用
this.$alert({msg: \'欢迎━(*`∀´*)ノ亻!\'})
5、confrim的封装也是一样的
main.vue
<template> <b-modal v-if=\"!destroy\" v-model=\"isShow\" title=\"温馨提示\" @change=\"modalChange\" @show=\"modalShow\" @shown=\"modalShown\" @hide=\"modalHide\" @hidden=\"modalHidden\" @ok=\"modalOk\" @cancel=\"modalCancel\" :centered=\"true\" :hide-header-close=\"hideHeaderClose\" :no-close-on-backdrop=\"noCloseOnBackdrop\" :no-close-on-esc=\"noCloseOnEsc\" :cancel-title=\"cancelTitle\" :ok-title=\"okTitle\"> <p class=\"my-4\">{{msg}}</p> </b-modal> </template> <script> export default { /** * 参考: https://bootstrap-vue.js.org/docs/components/modal * @param {boolean} isShow 是否显示modal框 * @param {string|number} msg 展示内容 * @param {boolean} hideHeaderClose 是否展示右上角关闭按钮 默认展示 * @param {string} cancelTitle 取消按钮文字 * @param {string} okTitle 确定按钮文字 * @param {boolean} noCloseOnBackdrop 能否通过点击外部区域关闭弹框 * @param {boolean} noCloseOnEsc 能否通过键盘Esc按键关闭弹框 * @param {function} change 事件触发顺序: show -> change -> shown -> cancel | ok -> hide -> change -> hidden * @param {function} show before modal is shown * @param {function} shown modal is shown * @param {function} hide before modal has hidden * @param {function} hidden after modal is hidden * @param {function} ok 点击\'确定\'按钮 * @param {function} cancel 点击\'取消\'按钮 * @param {Boolean} destroy 组件是否销毁 在官方并没有找到手动销毁组件的方法,只能通过v-if来实现 */ props: { isShow: { type: Boolean, default: true }, msg: { type: [String, Number], default: \'\' }, hideHeaderClose: { type: Boolean, default: false }, cancelTitle: { type: String, default: \'取消\' }, okTitle: { type: String, default: \'确定\' }, noCloseOnBackdrop: { type: Boolean, default: true }, noCloseOnEsc: { type: Boolean, default: true }, change: { type: Function, default: null }, show: { type: Function, default: null }, shown: { type: Function, default: null }, hide: { type: Function, default: null }, hidden: { type: Function, default: null }, ok: { type: Function, default: null }, cancel: { type: Function, default: null }, destroy: { type: Boolean, default: false } }, methods: { modalChange () { if (this.change) this.change() }, modalShow () { if (this.show) this.show() }, modalShown () { if (this.shown) this.shown() }, modalHide () { if (this.hide) this.hide() }, modalHidden () { if (this.hidden) this.hidden() this.destroy = true }, modalOk () { if (this.ok) this.ok() }, modalCancel () { if (this.cancel) this.cancel() } } } </script>
index.js
import Confirm from \'./main.vue\' import Vue from \'vue\' let ConfirmConstructor = Vue.extend(Confirm) let instance let seed = 1 let index = 1000 const install = () => { Object.defineProperty(Vue.prototype, \'$confirm\', { get () { let id = \'message_\' + seed++ const confirmMsg = options => { instance = new ConfirmConstructor({ propsData: options }) index++ instance.id = id instance.vm = instance.$mount() document.body.appendChild(instance.vm.$el) instance.vm.$el.style.zIndex = index return instance.vm } return confirmMsg } }) } export default install
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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