mui back() returns to refresh page method

Add event listener in the parent page:

		window.addEventListener('refresh', function(e) {
    
     
			chaxun();//执行刷新方法
		});

When the subpage is initialized, register the beforeback method:

		mui.init({
    
    
			beforeback: function() {
    
     //获得父页面的webview
				var list = plus.webview.currentWebview().opener(); //触发父页面的自定义事件(refresh),从而进行刷新
				mui.fire(list, 'refresh');
				//返回true,继续页面关闭逻辑
				return true;
			}
		});

After adding the above methods in the two interfaces. Use mui.back() anywhere in the sub-interface; you can achieve the effect