JS通过navigator.userAgent的返回值认识众浏览器

<pre name="code" class="javascript">function GetBrowserType(){ var u_agent = navigator.userAgent;

<pre name="code" class="javascript">function GetBrowserType(){   var u_agent = navigator.userAgent;   var browser_name='Failed to identify the browser';   if(u_agent.indexOf('Firefox')>-1){     browser_name='Firefox';   }else if(u_agent.indexOf('Chrome')>-1){     browser_name='Chrome';   }else if(u_agent.indexOf('Trident')>-1&&u_agent.indexOf('rv:11')>-1){     browser_name='IE11';   }else if(u_agent.indexOf('MSIE')>-1&&u_agent.indexOf('Trident')>-1){     browser_name='IE(8-10)';   }else if(u_agent.indexOf('MSIE')>-1){     browser_name='IE(6-7)';   }else if(u_agent.indexOf('Opera')>-1){     browser_name='Opera';   }else{     browser_name+=',info:'+u_agent;   }   console.log('browser_name:'+browser_name+'<br>');   console.log('u_agent:'+u_agent+'<br>'); }