Is the client that gets the scanning code wechat or Alipay

Whether the client to scan the code is wechat or Alipay

 Produced QR code ：

1） This is how Alipay scans the code

2） Wechat scanning code comes in like this

3） The mobile phone comes with a browser to scan the code

4） The mobile Google browser opens like this

5） The computer Google browser opens like this

 The code is as follows ：

    $(function(){
    
        let client = getClient();
        alert(client);
    })


    function getClient(){
    
        let userAgent = navigator.userAgent.toLowerCase();
        alert(userAgent);
        if(userAgent.indexOf('micromessenger') != -1){
    
            return 'wechat';
        }else if(userAgent.indexOf('alipayclient') != -1){
    
            return 'alipay';
        }
        if (/ipad|iphone|midp|rv:1.2.3.4|ucweb|android|windows ce|windows mobile/.test(userAgent)) {
    
            return 'mobile';
        } else {
    
            return 'computer';
        }
    }