[vue開發記錄]全局loading組件

上圖不上種,菊花萬人捅:javascript

loading.js:css

import './loading.css'

let Loading = {}
// 避免重複install,設立flag
Loading.installed = false
Loading.install = function (Vue) {
  if (Loading.installed) return
  Vue.prototype.$loading = {}
  Vue.prototype.$loading.show = () => {
    // 若是頁面有loading則不繼續執行
    if (document.querySelector('#vue-loading')) return
    // 一、建立構造器,定義loading模板
    let LoadingTip = Vue.extend({
      template: `<div id="vue-loading">
                    <div class="loader"></div>
                  </div>`
    })
    // 二、建立實例,掛載到文檔之後的地方
    let tpl = new LoadingTip().$mount().$el
    // 三、把建立的實例添加到body中
    document.body.appendChild(tpl)
    // 阻止遮罩滑動
    document.querySelector('#vue-loading').addEventListener('touchmove', function (e) {
      e.stopPropagation()
      e.preventDefault()
    })
    Loading.installed = true
  }
  Vue.prototype.$loading.hide = () => {
    let tpl = document.querySelector('#vue-loading')
    document.body.removeChild(tpl)
  }
}

export default Loading

  loading.css:html

#vue-loading {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0
}

.loader {
  position: relative;
  width: 2.5em;
  height: 2.5em;
  transform: rotate(165deg);
}

.loader:before, .loader:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 0.5em;
  height: 0.5em;
  border-radius: 0.25em;
  transform: translate(-50%, -50%);
}

.loader:before {
  animation: before 2s infinite;
}

.loader:after {
  animation: after 2s infinite;
}

@keyframes before {
  0% {
    width: 0.5em;
    box-shadow: 1em -0.5em rgba(225, 20, 98, 0.75), -1em 0.5em rgba(111, 202, 220, 0.75);
  }
  35% {
    width: 2.5em;
    box-shadow: 0 -0.5em rgba(225, 20, 98, 0.75), 0 0.5em rgba(111, 202, 220, 0.75);
  }
  70% {
    width: 0.5em;
    box-shadow: -1em -0.5em rgba(225, 20, 98, 0.75), 1em 0.5em rgba(111, 202, 220, 0.75);
  }
  100% {
    box-shadow: 1em -0.5em rgba(225, 20, 98, 0.75), -1em 0.5em rgba(111, 202, 220, 0.75);
  }
}

@keyframes after {
  0% {
    height: 0.5em;
    box-shadow: 0.5em 1em rgba(61, 184, 143, 0.75), -0.5em -1em rgba(233, 169, 32, 0.75);
  }
  35% {
    height: 2.5em;
    box-shadow: 0.5em 0 rgba(61, 184, 143, 0.75), -0.5em 0 rgba(233, 169, 32, 0.75);
  }
  70% {
    height: 0.5em;
    box-shadow: 0.5em -1em rgba(61, 184, 143, 0.75), -0.5em 1em rgba(233, 169, 32, 0.75);
  }
  100% {
    box-shadow: 0.5em 1em rgba(61, 184, 143, 0.75), -0.5em -1em rgba(233, 169, 32, 0.75);
  }
}

/**
 * Attempt to center the whole thing!
 */
html,
body {
  height: 100%;
}

.loader {
  position: absolute;
  top: calc(50% - 1.25em);
  left: calc(50% - 1.25em);
}

  在main.js裏面 :vue

   import Vue from 'vue';
   import Loading from '@/components/loading'
   Vue.use(Loading)

  這樣就能夠直接在組件裏面手動調用啦!java

  調用方法: this.$loading.show(),  this.$loading.hide()ios

  由於這個項目暫時規模很小,就只有註冊功能,我直接把調用寫在axios請求攔截器裏面,每次請求和請求結束都會調用loading,這樣就不用在頁面裏面手動調用啦。axios

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