var isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
var isAndroid = navigator.userAgent.toLowerCase().indexOf("android") > -1;
var nativeBrowserName = "系统浏览器";
if (isIOS) {
nativeBrowserName = "Safari";
}
if (isAndroid) {
nativeBrowserName = "Chrome";
}