禁止分享：
function onBridgeReady(){
WeixinJSBridge.call("hideOptionMenu");
}
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();
}
打开分享：
WeixinJSBridge.call("hideOptionMenu");
替换成WeixinJSBridge.call('showOptionMenu');
