判断 手机端 还是电脑端 打开网页

function mobile_device_detect(url){
			var thisOS=navigator.platform;
			var os=new Array("iPhone","iPod","iPad","android","Nokia","SymbianOS","Symbian","Windows Phone","Phone","Linux armv71","MAUI","UNTRUSTED/1.0","Windows CE","BlackBerry","IEMobile");
			for(var i=0;i<os.length;i++){
				if(thisOS.match(os[i])){   
					window.location=url;
				}
			}
			if(navigator.platform.indexOf('iPad') != -1){
				window.location=url;
			}
			var check = navigator.appVersion;
			if( check.match(/linux/i) ){
				if(check.match(/mobile/i) || check.match(/X11/i)) {
					window.location=url;
				}  
			}
			Array.prototype.in_array = function(e){
				for(i=0;i<this.length;i++){
					if(this[i] == e)
					return true;
				}
				return false;
			}
		} 
		var domain = document.domain;
		if(domain=='qcj.haodai05.cn'){
			mobile_device_detect("http://"+domain+"/mobile");
		}
		if(domain=='qcj.hxtz198.cn')
		{	
			mobile_device_detect("http://"+domain+"/mobile");
		}
		mobile_device_detect("http://www.***.com/mobile");

　　

来源：https://www.cnblogs.com/benpaodegegen/p/7149505.html