https://mp.weixin.qq.com/qa/18/2de79b9351537bb6cc00a7d1283bcb9a.html
document.addEventListener(‘WeixinJSBridgeReady‘, function onBridgeReady() {WeixinJSBridge.call(‘closeWindow‘);});
微信站点 点击 “退回” 按钮退回到主菜单
原文：http://www.cnblogs.com/bwlluck/p/6069053.html
