js内核判断

var browser = {
kernel:function(){
var u = navigator.userAgent, app = navigator.appVersion;
return {//移动终端浏览器版本信息
trident: u.indexOf('Trident') > -1, //IE内核
presto: u.indexOf('Presto') > -1, //opera内核
webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核
gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核
mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端
ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端
android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或者uc浏览器
iPhone: u.indexOf('iPhone') > -1 , //是否为iPhone或者QQHD浏览器
iPad: u.indexOf('iPad') > -1, //是否iPad
webApp: u.indexOf('Safari') == -1, //是否web应该程序，没有头部与底部
sdk: u.indexOf('sdkVersion')>-1 //Android及IOS的Webview自定义UserAgent
};
}(),
language:(navigator.browserLanguage || navigator.language).toLowerCase()
};

//关闭窗口
function closeWindow(code, msg){
setTimeout(function(){
if(browser.kernel.sdk){
document.getElementsByTagName("body")[0].style.display = "none";
notifySDK(code, msg);
}else if(browser.kernel.ios  || browser.kernel.iPhone || browser.kernel.iPad){
document.getElementsByTagName("body")[0].style.display = "none";
notifySDK(code, msg);
//window.close();
}else if(typeof WeixinJSBridge =='object'){//如果存在微信的js对象，则调用微信js关闭
WeixinJSBridge.invoke('closeWindow');
}else if(navigator.userAgent.indexOf("MSIE") > 0){//IE关闭页面处理
if(navigator.userAgent.indexOf("MSIE 6.0") > 0){
window.opener = null;
window.close();
}else{
window.open('', '_top');
window.top.close();
}
}else if(navigator.userAgent.indexOf("Firefox") > 0){
window.location.href = 'about:blank ';
}else{
document.getElementsByTagName("body")[0].style.display = "none";
window.opener = null;
window.open('', '_self', '');
window.close();
}
},1);
}

//通知SDK
function notifySDK(code,msg){
var urlStr = 'zzfPaySDK://business_close/{"code":"' + code + '","msg":';
if(typeof(msg) == "object"
&& (Object.prototype.toString.call(msg).toLowerCase() == "[object object]"
|| Object.prototype.toString.call(msg).toLowerCase() == "[object array]"))
urlStr += JSON.stringify(msg);
else{
try{
JSON.parse(msg);
urlStr += msg;
}catch(e){
urlStr += '"' + msg + '"';
}
}
urlStr += '}';
top.location.href = urlStr;
}