//弹框
const Modal = {
 template: '#modal',
 data() {
  return {
   isShowing: false
  }
 },
 methods: {
  toggleShow() {
   this.isShowing = !this.isShowing;
  }
 },
 components: {
  appChild: Child
 }
}

//提示框
const Tooltip = {
 template: '#tooltip',
 data() {
  return {
   isShowing: false
  }
 },
 methods: {
  toggleShow() {
   this.isShowing = !this.isShowing;
  }
 },
 components: {
  appChild: Child
 }
}

const toggle = {
 data() {
  return {
   isShowing: false
  }
 },
 methods: {
  toggleShow() {
   this.isShowing = !this.isShowing;
  }
 }
}

const Modal = {
 template: '#modal',
 mixins: [toggle],
 components: {
  appChild: Child
 }
};

const Tooltip = {
 template: '#tooltip',
 mixins: [toggle],
 components: {
  appChild: Child
 }
};

//mixin
const hi = {
 mounted() {
  console.log('this mixin!')
 }
}

//vue组件
new Vue({
 el: '#app',
 mixins: [hi],
 mounted() {
  console.log('this Vue instance!')
 }
});

//Output in console
> this mixin!
> this Vue instance!

Vue.mixin({
 mounted() {
  console.log('hello from mixin!')
 },
 method:{
   test:function(){
   }
  }
})

new Vue({
 el: '#app',
 mounted() {
  console.log('this Vue instance!')
 }
})

var install = function (Vue, options) {
 // 1. 添加全局方法或属性
 Vue.myGlobalMethod = function () {
  // 逻辑...
 }
 // 2. 添加全局资源
 Vue.directive('my-directive', {
  bind (el, binding, vnode, oldVnode) {
   // 逻辑...
  }
  ...
 })
 // 3. 注入组件
 Vue.mixin({
  created: function () {
   // 逻辑...
  }
  ...
 })
 // 4. 添加实例方法
 Vue.prototype.$myMethod = function (options) {
  // 逻辑...
 }
}