Loveboke

    <script type="text/javascript">        
        if (/MicroMessenger/.test(window.navigator.userAgent)) { 
            alert('微信客户端'); 
        } else if (/AlipayClient/.test(window.navigator.userAgent)) { 
            alert('支付宝客户端');
        } else {
            alert('其他浏览器');
        }  
    </script>