老师，这样子是对的吗？

是这样吗

<script type='text/javascript'>

         var oInput=document.getElementById('browser');

         function getBrowserName(){

             //需要使用navigator对象来获取有关浏览器的信息

             var info=navigator.userAgent;

             var result;

             if(info.indexOf('MSIE')>-1){

                 result='MSIE浏览器';

             }else if(info.includes('Firefox')){

                 result='Firefox浏览器';

             }else if(info.includes('Chrome')){

                 result='Chrome浏览器';

             }else if(info.includes('Safari')&&!info.includes('Chrome')){

                 result='Safari浏览器';

             }

             return result;

         }

         oInput.onclick=function(){

             alert('您使用的浏览器是'+getBrowserName());

         }

    </script>

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