不需要引用js,但是你要这么写:
if (typeof WeixinJSBridge == "undefined") {
if (document.addEventListener) {
document.addEventListener('WeixinJSBridgeReady', wxPayCall, false);
} else if (document.attachEvent) {
document.attachEvent('WeixinJSBridgeReady', wxPayCall);
document.attachEvent('onWeixinJSBridgeReady', wxPayCall);
你要在注册一下WeixinJSBridgeReady