Openlayers combat: loadstart and loadend events

In the project developed by Openlayers, the loadstart and loadend events can well display the loading status of the map, and clearly show the loading status of the map, so as not to be impatient.

renderings

source code

/*
* @Author: 大剑师兰特（xiaozhuanlan），还是大剑师兰特（CSDN）
* @此源代码版权归大剑师兰特所有，可供学习或商业项目中借鉴，未经授权，不得重复地发表到博客、论坛，问答，git等公共空间或网站中。
* @Email: [email protected]
* @First published in CSDN
* @First published time: 2023-08-02
*/

<template>
	<div class="container">
		<</