style:自定义loading加载文字

-// import { Loading } from 'element-ui'
 import Loading from '@/components/loading/index.js';
 // 定义 loading 
 let loading
 
 // loading开始 方法
-function startLoading (target = "body") {
+function startLoading (target = "body", loadingText = '正在加载中...') {
   loading = Loading.service({
-    text: '正在加载中...',
+    text: loadingText,
     spinner: 'el-icon-loading',
     background: 'rgba(255, 255, 255, 0.5)',
     target: '#' + target