vue中elementUI里面一些插件的使用

 npm i screenfull@5.1.0

<template>
  <div>
    <!-- 放置一个按钮 -->
    <el-button class="icon" @click="changeScreen">全屏</el-button>
  </div>
</template>

<script>
import ScreenFull from 'screenfull'
export default {
  methods: {
    //   改变全屏
    changeScreen() {
      if (!ScreenFull.isEnabled) {
        // 此时全屏不可用
        this.$message.warning('此时全屏组件不可用')
        return
      }
      // document.documentElement.requestFullscreen()  原生js调用
      //   如果可用 就可以全屏
      ScreenFull.toggle()
    }
  }
}
</script>

<style scoped>
.icon{
width: 40px;
height: 40px;
background-color: #ff0;
}
</style>

import ScreenFull from './ScreenFull'
Vue.component('ScreenFull', ScreenFull) // 注册全屏组件

<template>
  <div id="app">
    //全屏按钮
    <screen-full />
  </div>
</template>

<script>
export default {
  name: 'App'
}
</script>

<template>
  <el-color-picker
    v-model="theme"
    :predefine="['#409EFF', '#1890ff', '#304156','#212121','#11a983', '#13c2c2', '#6959CD', '#f5222d', ]"
    class="theme-picker"
    popper-class="theme-picker-dropdown"
  />

</template>

<script>
const version = require('element-ui/package.json').version // element-ui version from node_modules
const ORIGINAL_THEME = '#409EFF' // default color
export default {
  data() {
    return {
      chalk: '', // content of theme-chalk css
      theme: ''
    }
  },
  computed: {
    defaultTheme() {
      return this.$store.state.settings.theme
    }
  },
  watch: {
    defaultTheme: {
      handler: function(val, oldVal) {
        this.theme = val
      },
      immediate: true
    },
    async theme(val) {
      const oldVal = this.chalk ? this.theme : ORIGINAL_THEME
      if (typeof val !== 'string') return
      const themeCluster = this.getThemeCluster(val.replace('#', ''))
      const originalCluster = this.getThemeCluster(oldVal.replace('#', ''))
      console.log(themeCluster, originalCluster)
      const $message = this.$message({
        message: '  Compiling the theme',
        customClass: 'theme-message',
        type: 'success',
        duration: 0,
        iconClass: 'el-icon-loading'
      })
      const getHandler = (variable, id) => {
        return () => {
          const originalCluster = this.getThemeCluster(ORIGINAL_THEME.replace('#', ''))
          const newStyle = this.updateStyle(this[variable], originalCluster, themeCluster)
          let styleTag = document.getElementById(id)
          if (!styleTag) {
            styleTag = document.createElement('style')
            styleTag.setAttribute('id', id)
            document.head.appendChild(styleTag)
          }
          styleTag.innerText = newStyle
        }
      }
      if (!this.chalk) {
        const url = `https://unpkg.com/element-ui@${version}/lib/theme-chalk/index.css`
        await this.getCSSString(url, 'chalk')
      }
      const chalkHandler = getHandler('chalk', 'chalk-style')
      chalkHandler()
      const styles = [].slice.call(document.querySelectorAll('style'))
        .filter(style => {
          const text = style.innerText
          return new RegExp(oldVal, 'i').test(text) && !/Chalk Variables/.test(text)
        })
      styles.forEach(style => {
        const { innerText } = style
        if (typeof innerText !== 'string') return
        style.innerText = this.updateStyle(innerText, originalCluster, themeCluster)
      })
      this.$emit('change', val)
      $message.close()
    }
  },
  methods: {
    updateStyle(style, oldCluster, newCluster) {
      let newStyle = style
      oldCluster.forEach((color, index) => {
        newStyle = newStyle.replace(new RegExp(color, 'ig'), newCluster[index])
      })
      return newStyle
    },
    getCSSString(url, variable) {
      return new Promise(resolve => {
        const xhr = new XMLHttpRequest()
        xhr.onreadystatechange = () => {
          if (xhr.readyState === 4 && xhr.status === 200) {
            this[variable] = xhr.responseText.replace(/@font-face{[^}]+}/, '')
            resolve()
          }
        }
        xhr.open('GET', url)
        xhr.send()
      })
    },
    getThemeCluster(theme) {
      const tintColor = (color, tint) => {
        let red = parseInt(color.slice(0, 2), 16)
        let green = parseInt(color.slice(2, 4), 16)
        let blue = parseInt(color.slice(4, 6), 16)
        if (tint === 0) { // when primary color is in its rgb space
          return [red, green, blue].join(',')
        } else {
          red += Math.round(tint * (255 - red))
          green += Math.round(tint * (255 - green))
          blue += Math.round(tint * (255 - blue))
          red = red.toString(16)
          green = green.toString(16)
          blue = blue.toString(16)
          return `#${red}${green}${blue}`
        }
      }
      const shadeColor = (color, shade) => {
        let red = parseInt(color.slice(0, 2), 16)
        let green = parseInt(color.slice(2, 4), 16)
        let blue = parseInt(color.slice(4, 6), 16)
        red = Math.round((1 - shade) * red)
        green = Math.round((1 - shade) * green)
        blue = Math.round((1 - shade) * blue)
        red = red.toString(16)
        green = green.toString(16)
        blue = blue.toString(16)
        return `#${red}${green}${blue}`
      }
      const clusters = [theme]
      for (let i = 0; i <= 9; i++) {
        clusters.push(tintColor(theme, Number((i / 10).toFixed(2))))
      }
      clusters.push(shadeColor(theme, 0.1))
      return clusters
    }
  }
}
</script>

<style>
.theme-message,
.theme-picker-dropdown {
  z-index: 99999 !important;
}
.theme-picker .el-color-picker__trigger {
  height: 26px !important;
  width: 26px !important;
  padding: 2px;
}
.theme-picker-dropdown .el-color-dropdown__link-btn {
  display: none;
}
.el-color-picker {
  height: auto !important;
}
</style>

import ThemePicker from './ThemePicker'
Vue.component('ThemePicker', ThemePicker)

   <template>
  <div id="app">
    <el-button type="primary">按钮</el-button>
    <el-divider/>
    //放置动态主题按钮
    <ThemePicker></ThemePicker>
  </div>
</template>
<script>

export default {
}
</script>

<style>
</style>

  npm i vue-i18n@8

import Vue from 'vue' // 引入Vue
import VueI18n from 'vue-i18n' // 引入国际化的包
import elementEN from 'element-ui/lib/locale/lang/en' // 引入饿了么的英文包
import elementZH from 'element-ui/lib/locale/lang/zh-CN' // 引入饿了么的中文包
Vue.use(VueI18n) // 全局注册国际化包
export default new VueI18n({
  locale: 'zh', // 从cookie中获取语言类型 获取不到就是中文
  messages: {
    en: {
      ...elementEN // 将饿了么的英文语言包引入
    },
    zh: {
      ...elementZH // 将饿了么的中文语言包引入
    }
  }
})

import Vue from 'vue'
import ElementUI from 'element-ui'
import locale from 'element-ui/lib/locale/lang/en'
// 设置element为当前的语言
import i18n from '@/lang/index'

Vue.use(ElementUI, { locale })

new Vue({
  el: '#app',
  i18n,
  render: h => h(App)
})

export default {
  lang: {
    dashboard: '首页',
    bug:'bug就是bug'
  }
}

export default {
  lang: {
    dashboard: 'Dashboard',
    bug:'bug is a bug'
  }
}

import customZH from './zh' // 引入自定义中文包
import customEN from './en' // 引入自定义英文包
Vue.use(VueI18n) // 全局注册国际化包
export default new VueI18n({
  locale: 'zh', // 从cookie中获取语言类型 获取不到就是中文
  messages: {
    en: {
      ...elementEN, // 将饿了么的英文语言包引入
      ...customEN
    },
    zh: {
      ...elementZH, // 将饿了么的中文语言包引入
      ...customZH
    }
  }
})

<template>
  <div id="app">
   <h1 v-text="$t('lang.dashboard')"></h1>
   <h1 v-text="$t('lang.bug')"></h1>
  </div>
</template>

<template>
  <el-dropdown trigger="click" @command="changeLanguage">
    <!-- 这里必须加一个div -->
    <div>
      <el-button type="primary">切换多语言</el-button>
    </div>
    <el-dropdown-menu slot="dropdown">
      <el-dropdown-item command="zh" :disabled="'zh'=== $i18n.locale ">中文</el-dropdown-item>
      <el-dropdown-item command="en" :disabled="'en'=== $i18n.locale ">en</el-dropdown-item>
    </el-dropdown-menu>
  </el-dropdown>
</template>

<script>
export default {
  methods: {
    changeLanguage(lang) {
      this.$i18n.locale = lang // 设置给本地的i18n插件
      this.$message.success('切换多语言成功')
    }
  }
}
</script>

 <!-- 切换多语言 -->
 <template>
  <div id="app">
    <lang/>
    <el-divider/>
    <el-divider/>
    <el-divider/>
   <h1 v-text="$t('lang.dashboard')"></h1>
   <h1 v-text="$t('lang.bug')"></h1>
  </div>
</template>