The uniapp application directly delivers messages (uniapp is packaged into h5 for communication between another uniapp application.

The implementation is as follows
1. Visit https://gitee.com/dcloud/uni-app/raw/master/dist/uni.webview.1.5.2.js and copy the code to the local h5 project, as shown in the figure:

2. In Main.js in the uniapp h5 project is introduced

import * as uni from './common/uni_webview.js'  

document.addEventListener("UniAppJSBridgeReady", function() {
    
     
	console.log("ewee")
	
    Vue.prototype.myUni = uni
});
var foo = 'bar';

3. The uniapp h5 project sends a message to another project, implemented as follows

this.myUni.webView.postMessage({
    
      
				        data: {
    
      
				          action: "xxxxxxxx",  
				        },  
				      });  

4. Another project receives messages as follows:
(1) Integrate web-view (basic usage: https://uniapp.dcloud.io/component/web-view)

<web-view ref="webview" src="http:/xxxx" **@message**="handleMessage">
		</web-view>

(2)Receive messages

 methods: {
    
    
   		handleMessage: function(data) {
    
    
   			console.log("data", data)
   		},
 }