区分移动端H5断网后操作navigator对象如下解析如下摘自：https://blog.csdn.net/weix

if(navigator.onLine) {  // true false
	alert('连网情况下进行操作')
} else {
	alert('断网情况下进行操作');
	layer.msg('网络异常')
}

navigator对象如下

txt = "<p>浏览器代号: " + navigator.appCodeName + "</p>";
txt+= "<p>浏览器名称: " + navigator.appName + "</p>";
txt+= "<p>浏览器版本: " + navigator.appVersion + "</p>";
txt+= "<p>启用Cookies: " + navigator.cookieEnabled + "</p>";
txt+= "<p>硬件平台: " + navigator.platform + "</p>";
txt+= "<p>用户代理: " + navigator.userAgent + "</p>";
txt+= "<p>用户代理语言: " + navigator.systemLanguage + "</p>";
document.getElementById("example").innerHTML=txt;

解析如下

浏览器代号: Mozilla

浏览器名称: Netscape

浏览器版本: 5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

启用Cookies: true

硬件平台: Win32

用户代理: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

用户代理语言: undefined

摘自：blog.csdn.net/weixin_4507…