location 对象 navigator的应该 （获取浏览器名称和版本信息）

 

 

 

<script>
  console.log("appName"+navigator.appName);
  console.log("appVersion"+navigator.appVersion);
  console.log("platform"+navigator.platform);
  console.log("userAgent"+navigator.userAgent) ;

          function validB(){
              var u_agent = navigator.userAgent      ;
              var B_name="不是想用的主流浏览器!";
              if(u_agent.indexOf("Firefox")>-1){
                  B_name="Firefox";
              }else if(u_agent.indexOf("Chrome")>-1){
                  B_name="Chrome";
              }else if(u_agent.indexOf("MSIE")>-1&&u_agent.indexOf("Trident")>-1){
                  B_name="IE(8-10)";
              }
              else if(u_agent.indexOf("Trident")>-1){
                  B_name="IE(11)";
              }
          var a= u_agent.substring( u_agent.indexOf(B_name),u_agent.length);
              document.write("浏览器:"+B_name+"<br>");
              document.write("u_agent:"+a+"<br>");

          }






</script>
<form>
    <input type="button" value="查看浏览器"   onclick="validB()">
</form>