Question

请问如何用js判断是何种浏览器？

Answer 1

var browername = "";
var browerversion = "";
$(document).ready(function () {//页面加载事件
    //Jquery新特征
    var browerinfo = navigator.userAgent.toLowerCase();
    if (/msie/.test(browerinfo))
    {
        browername = "Ie";
        browerversion = getversiong(browerinfo, "msie");
    }
    if (/firefox/.test(browerinfo))
    {
        browername = "Mozilla Firefox ";
        browerversion = getversiong(browerinfo, "firefox");
    }
    if (/safari/.test(browerinfo))
    {
        browername = "Apple Safari ";
        browerversion = getversiong(browerinfo, "safari");
    }
    if (/chrome/.test(browerinfo))
    {
        browername = "Google";
        browerversion = getversiong(browerinfo, "chrome");
    }
    if(/opr/.test(browerinfo))
    {
        browername = "Opera ";
        browerversion = getversiong(browerinfo, "opr");
    }
    //alert(browername+","+browerversion);
})
function getversiong(browerinfo,obj)//获取浏览器的版本号
{
    switch (obj)
    {
        case "msie":
            var nameversion = browerinfo.substring(browerinfo.indexOf(obj));
            var version = nameversion.substring(nameversion.search(/ /g)+1, nameversion.indexOf(";"));
            break;
        case "firefox":
            var nameversion = browerinfo.substring(browerinfo.indexOf(obj));
            var version = nameversion.substring(nameversion.indexOf("/") + 1);
            break;
        case "safari":
            var nameversion = browerinfo.substring(browerinfo.indexOf(obj));
            var version = nameversion.substring(nameversion.indexOf("/") + 1);
            break;
        case "chrome":
            var nameversion = browerinfo.substring(browerinfo.indexOf(obj));
            var version = nameversion.substring(nameversion.indexOf("/") + 1, nameversion.search(/ /g) + 1);
            break;
        case "opr":
            var nameversion = browerinfo.substring(browerinfo.indexOf(obj));
            var version = nameversion.substring(nameversion.indexOf("/") + 1);
            break;
    }
    return version;
}
function getbrowerinfo()
{
    return browername +":"+ browerversion;
}

Answer 2

　　您好！很高兴为您答疑！

代码如下：

<script language="JavaScript" type="text/javascript">
if ((navigator.userAgent.indexOf('MSIE') >= 0) && (navigator.userAgent.indexOf('Opera') < 0)){alert('你是使用IE')}else
if (navigator.userAgent.indexOf('Firefox') >= 0){alert('你是使用Firefox')}else
if (navigator.userAgent.indexOf('Opera') >= 0){alert('你是使用Opera')}else
{alert('你是使用其他的浏览器浏览网页！')}
</script>

Answer 3

navigator.useragent来判断，具体去网上找资料