Uniapp wechat applet monitoring network

/** *  Judge whether there is a network  */
export default function useNetWork() {
    
	getNetStatus().then(res => {
    
	  console.log(' Have a net ', res);
	}).catch(res => {
    
		setTimeout(() => {
    
			uni.showToast({
    
				title: ' Please check your network connection ',
				icon: 'none',
				duration: 3000,
			})
		}, 100)
		wx.onNetworkStatusChange(function(res) {
    
			if (res.isConnected) {
    
				uni.showToast({
    
					title: ' The network has been restored ',
					icon: 'none',
					duration: 1000,
				})
			} else {
    
			 useNetWork();
			}
		})
	})
}

function getNetStatus(){
    
	return new Promise((resolve, reject) => {
    
		wx.getNetworkType({
    
			success (res) {
    
				const networkType = res.networkType;
				if (res.networkType === 'none') {
    
					reject();
				} else {
    
					resolve();
				}
			}
		})
	})
}

Use ：

// Call this method before requesting the interface 
useNetWork();