WeixinJSBridge.call('closeWindow');//微信 
AlipayJSBridge.call('closeWebview'); //支付宝 
BLightApp.closeWindow();//百度钱包

var ua = navigator.userAgent.toLowerCase(); 
f(ua.match(/MicroMessenger/i)=="micromessenger") { 
alert("微信客户端"); 
} else if(ua.indexOf("alipay")!=-1){ 
alert("支付宝客户端"); 
}else if(ua.indexOf("baidu")!=-1){ 
alert("百度客户端"); 
}

$(function(){ 
pushHistory(); 
window.addEventListener("popstate", function(e) { 
}, false); 
function pushHistory() { 
var state = { 
title: "title", 
url: "#" 
}; 
window.history.pushState(state, "title", "#"); 
} 
});

$(function(){ 
pushHistory(); 
window.addEventListener("popstate", function(e) { 
pushHistory(); 
var ua = navigator.userAgent.toLowerCase(); 
if(ua.match(/MicroMessenger/i)=="micromessenger") { 
WeixinJSBridge.call('closeWindow'); 
} else if(ua.indexOf("alipay")!=-1){ 
AlipayJSBridge.call('closeWebview'); 
}else if(ua.indexOf("baidu")!=-1){ 
BLightApp.closeWindow(); 
} 
else{ 
window.close(); 
} 
}, false); 
function pushHistory() { 
var state = { 
title: "title", 
url: "#" 
}; 
window.history.pushState(state, "title", "#"); 
} 
});