动手吧，vue2自定义全局loading_vue2 开发移动端添加loading

新建loading.vue, 用来写loading组件

<template>
  <div class="loading-mask flex-center-center">
    <svg viewBox="25 25 50 50" class="circular">
      <circle cx="50" cy="50" r="20" fill="none" class="path"></circle>
      <circle cx="50" cy="50" r="15" fill="none" class="path"></circle>
      <circle cx="50" cy="50" r="10" fill="none" class="path"></circle>
    </svg>
  </div>
</template>

<style lang="scss">
.flex-center-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.loading-mask {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  .circular {
    height: 35px;
    width: 35px;
    animati
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