【js】判断设备类型，访问相应的网站

function uaredirect(f) {
	try {
		if (document.getElementById("bdmark") != null) {
			return
		}
		var b = false;
		if (arguments[1]) {
			var e = window.location.host;
			var a = window.location.href;
			if (isSubdomain(arguments[1], e) == 1) {
				f = f + "/#m/" + a;
				b = true
			} else {
				if (isSubdomain(arguments[1], e) == 2) {
					f = f + "/#m/" + a;
					b = true
				} else {
					f = a;
					b = false
				}
			}
		} else {
			b = true
		}
		if (b) {
			var c = window.location.hash;
			if (!c.match("fromapp")) {
				if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i))) {
					location.replace(f)
				}
			}
		}
	} catch (d) {}
}

function isSubdomain(c, d) {
	this.getdomain = function(f) {
		var e = f.indexOf("://");
		if (e > 0) {
			var h = f.substr(e + 3)
		} else {
			var h = f
		}
		var g = /^www\./;
		if (g.test(h)) {
			h = h.substr(4)
		}
		return h
	};
	if (c == d) {
		return 1
	} else {
		var c = this.getdomain(c);
		var b = this.getdomain(d);
		if (c == b) {
			return 1
		} else {
			c = c.replace(".", "\\.");
			var a = new RegExp("\\." + c + "$");
			if (b.match(a)) {
				return 2
			} else {
				return 0
			}
		}
	}
};

<script src="~/js/uaredirect.js"></script>
<script >uaredirect("需要跳转的url")</script>