JSAPI支付参考

$.post("{php echo app_url(‘pay/cash‘)}",{orderno:orderno,paytype:paytype},function(m){ //todo: 跳转到微信支付，获取支付的相关信息
                           if(!m.errno){
                               m.data.timeStamp = String(m.data.timeStamp);
                               WeixinJSBridge.invoke(‘getBrandWCPayRequest‘, {
                                   ‘appId‘: m.data.appid ? m.data.appid : m.data.appId,
                                   ‘timeStamp‘: m.data.timeStamp,
                                   ‘nonceStr‘: m.data.nonceStr,
                                   ‘package‘: m.data.package,
                                   ‘signType‘: m.data.signType,
                                   ‘paySign‘: m.data.paySign,
                               }, function(res) {
                                   if(res.err_msg == ‘get_brand_wcpay_request:ok‘) {
                                       location.href = "{php echo app_url(‘pay/cash‘)}&orderno="+orderno+"&paytype="+paytype+"&done=1";
                                   } else {
                                       $.post("{php echo app_url(‘pay/paytype‘)}",{orderno:orderno,remark:remark,othername:othername,op:"ajax",checkpay:"8"},function(m){
                                           $.toast("已取消支付");
                                       },"json");
                                   }
                               });
                           }else{
                               $.confirm(m.message, function () {
                                   history.go(-1);
                               })
                           }
                       },"json");

document.addEventListener(‘WeixinJSBridgeReady‘, function onBridgeReady() {
       WeixinJSBridge.invoke(‘getBrandWCPayRequest‘,pathinfo , function(res) { // Pathinfo:json，相关的信息
           if(res.err_msg == ‘get_brand_wcpay_request:ok‘) {
               location.href=‘/index.php/Mobile/User/order_detail/id/‘+orderid+‘.html‘
           } else {
               location.href=‘{$url}‘
           }
       });
   }, false);

let time = new Date().getTime()
function onBridgeReady () {
WeixinJSBridge.invoke(
‘getBrandWCPayRequest‘, {
"appId": res1.data.appId, //公众号名称，由商户传入
"timeStamp": res1.data.timeStamp + ‘‘, //时间戳，自1970年以来的秒数
"nonceStr": res1.data.nonceStr, //随机串
"package": res1.data.package,
"signType": res1.data.signType, //微信签名方式
"paySign": res1.data.paySign //微信签名
},
function (res) {
// console.log(‘支付回调:‘, res)
if (res.err_msg == "get_brand_wcpay_request:ok") {
// 使用以上方式判断前端返回,微信团队郑重提示：
//res.err_msg将在用户支付成功后返回ok，但并不保证它绝对可靠
window.location.href = window.location.origin + ‘/#/orderList‘
} else {
window.location.href = window.location.origin + ‘/#/orderList‘
}
})
}
if (typeof WeixinJSBridge == "undefined") {
if (document.addEventListener) {
document.addEventListener(‘WeixinJSBridgeReady‘, onBridgeReady, false);
} else if (document.attachEvent) {
document.attachEvent(‘WeixinJSBridgeReady‘, onBridgeReady);
document.attachEvent(‘onWeixinJSBridgeReady‘, onBridgeReady);
}
} else {
onBridgeReady();
}

        function jsApiCall()
        {
            try {
                WeixinJSBridge.invoke(
                    ‘getBrandWCPayRequest‘,
                    <%= WxJsApiParam %> ,
                    function(res) {
                        WeixinJSBridge.log(res.err_msg);
                        alert(res.err_code + res.err_desc + res.err_msg);
                    }
                );
            } catch (e) {
                alert(e);
            }
        }

        function callpay()
        {
            try {
                if (typeof WeixinJSBridge == "undefined") {
                    if (document.addEventListener) {
                        document.addEventListener(‘WeixinJSBridgeReady‘, jsApiCall, false);
                    } else if (document.attachEvent) {
                        document.attachEvent(‘WeixinJSBridgeReady‘, jsApiCall);
                        document.attachEvent(‘onWeixinJSBridgeReady‘, jsApiCall);
                    }
                } else {
                    jsApiCall();
                }
            } catch (e) {
                alert(e);
            }
            window.event.returnValue = false;
            return false;
        }

function jsApiCall() { 
   WeixinJSBridge.invoke(‘getBrandWCPayRequest‘,, function(res) {  
    var msg = res.err_msg; 
 
    if (msg == "get_brand_wcpay_request:ok") { 
        alert("支付成功，跳转到订单详情页"); 
        location.href = "/order_detail.php"; 
    } else { 
        if (msg == "get_brand_wcpay_request:cancel") { 
            var err_msg = "您取消了微信支付"; 
        } else if (res.err_code == 3) { 
            var err_msg = "您正在进行跨号支付正在为您转入扫码支付......"; 
        } else if (msg == "get_brand_wcpay_request:fail") { 
            var err_msg = "微信支付失败错误信息：" + res.err_desc; 
        } else { 
            var err_msg = msg + "" + res.err_desc; 
        } 
        show_notice(err_msg); 
    } 
   } 
}