判断是否在微信客户端

src/pages/index/index.jsx

@@ -53,6 +53,8 @@ const Index = () => {
 
   const [joinMeetup, setjoinMeetup] = useState(false);
 
+  const [isWeChat, setisWeChat] = useState(false);
+
   const getOpenidFromUrl = (url) => {
     const pattern = /[?&]openid=([^&#]+)/;
     const match = url.match(pattern);
@@ -62,6 +64,18 @@ const Index = () => {
     return null;
   };
 
+  // 是否在微信客户端
+  const isWeChatFun = () => {
+    var ua = navigator.userAgent.toLowerCase();
+    if (ua.indexOf("micromessenger") != -1) {
+      setisWeChat(true);
+      return true;
+    } else {
+      setisWeChat(false);
+      return false;
+    }
+  };
+
   // 获取openid
   const getOpenid = () => {
     // let newparams = Taro.getCurrentInstance().router.params;
@@ -232,13 +246,14 @@ const Index = () => {
   // 入群申请
 
   useEffect(() => {
-    // 获取openId
-    getOpenid();
-    // window.alert(window.location.href)
-    // o7LFAwR32hWGq9XOpd7ZxK1wZxq8
-    // window.alert(window.localStorage.getItem('openid'))
-
-    // tgMessage();
+    let inwechat = isWeChatFun();
+    if (inwechat) {
+       // 获取openId
+       getOpenid();
+    } else {
+      // window.alert('不在微信')
+     
+    }
   }, []);
 
   const goBack = () => {