From eaad22d9dae9a952f0474ca0a01bfeef570a96a0 Mon Sep 17 00:00:00 2001
From: Tevin <tingquanren@163.com>
Date: Fri, 07 Apr 2023 11:45:44 +0800
Subject: [PATCH] 增加数组交换元素顺序方法
---
common/Helper.js | 33 +++++++++++++++++++++++++++++++--
1 files changed, 31 insertions(+), 2 deletions(-)
diff --git a/common/Helper.js b/common/Helper.js
index 94ea683..414046c 100644
--- a/common/Helper.js
+++ b/common/Helper.js
@@ -1,11 +1,40 @@
/**
- * Helper - 小功能集
+ * Helper - 帮助小功能集
* @author Tevin
*/
export class Helper {
constructor() {
+ }
+
+ /**
+ * 检查网络状态
+ * @param {Function} callback
+ */
+ checkOnlineState(callback) {
+ // 网页模式
+ if (process.env.TARO_ENV === 'h5') {
+ // 网络已开启
+ if (navigator.onLine) {
+ // 用图片资源测试网络状态
+ const img = new Image();
+ img.onload = () => {
+ img.onload = null;
+ callback && callback(true);
+ };
+ img.onerror = () => {
+ img.onerror = null;
+ callback && callback(false);
+ };
+ img.src = 'http://gz.zhiheiot.com/disp/download/buildArchive/online.png?t=' + Date.now();
+ }
+ // 网络未开启
+ else {
+ callback && callback(false);
+ }
+ }
+ // 补充：小程序模式用 getNetworkType
}
/**
@@ -104,4 +133,4 @@
}
-export const $Helper = new Helper();
\ No newline at end of file
+export const $helper = new Helper();
\ No newline at end of file
--
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