javascript判断浏览器版本

文章内容

本文介绍javascript判断浏览器版本，代码如下

javascript代码

<script>
    function getBroswerAndVersion() {
        var os = navigator.platform;
        var userAgent = navigator.userAgent;
        var info = "";
        var tempArray = "";
        //判断浏览器版本
        var isOpera = userAgent.indexOf("Opera") > -1; //判断是否Opera浏览器
        var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器
        var isEdge = userAgent.toLowerCase().indexOf("edge") > -1 && !isIE; //判断是否IE的Edge浏览器
        var isIE11 = (userAgent.toLowerCase().indexOf("trident") > -1 && userAgent.indexOf("rv") > -1);

        if (/[Ff]irefox(\/\d+\.\d+)/.test(userAgent)) {
            tempArray = /([Ff]irefox)\/(\d+\.\d+)/.exec(userAgent);
            info += tempArray[1] + tempArray[2];
        } else if (isIE) {

            var version = "";
            var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
            reIE.test(userAgent);
            var fIEVersion = parseFloat(RegExp["$1"]);
            if (fIEVersion == 7)
            { version = "IE7"; }
            else if (fIEVersion == 8)
            { version = "IE8"; }
            else if (fIEVersion == 9)
            { version = "IE9"; }
            else if (fIEVersion == 10)
            { version = "IE10"; }
            else
            { version = "0" }

            info += version;

        } else if (isEdge) {
            info += "Edge";
        } else if (isIE11) {
            info += "IE11";
        } else if (/[Cc]hrome\/\d+/.test(userAgent)) {
            tempArray = /([Cc]hrome)\/(\d+)/.exec(userAgent);
            info += tempArray[1] + tempArray[2];
        } else if (/[Vv]ersion\/\d+\.\d+\.\d+(\.\d)* *[Ss]afari/.test(userAgent)) {
            tempArray = /[Vv]ersion\/(\d+\.\d+\.\d+)(\.\d)* *([Ss]afari)/.exec(userAgent);
            info += tempArray[3] + tempArray[1];
        } else if (/[Oo]pera.+[Vv]ersion\/\d+\.\d+/.test(userAgent)) {
            tempArray = /([Oo]pera).+[Vv]ersion\/(\d+)\.\d+/.exec(userAgent);
            info += tempArray[1] + tempArray[2];
        } else {
            info += "unknown";
        }

        return info;

    }

    var bro = getBroswerAndVersion();

    if (bro == "IE5" || bro == "IE6" || bro == "IE7" || bro == "IE8" || bro == "IE9" || bro == "IE10" || bro == "IE11") {
        alert("若想看到本站最佳效果建议使用谷歌、opera、火狐、safari浏览器或升级IE至11以上版本");
        window.opener = null;
        window.open(' ', '_self', ' ');
        window.close();
    }

</script>