百度判断手机终端并自动跳转js代码及使用实例

百度目前为站长提供了判断手机终端类型并自动实现跳转的js脚本，极大的方便了广大站长及web开发人员。其js脚本的使用方法极其简单。

<script src="http://siteapp.baidu.com/static/webappservice/uaredirect.js" type="text/javascript"></script>

<SCRIPT type=text/javascript>uaredirect("手机站","WEB站");</SCRIPT>

其中最为核心的js脚本格式化代码如下所示：

function uaredirect(f) {

    try {

        if (document.getElementById("bdmark") != null) {

            return

        }

        var b = false;

        if (arguments[1]) {

            var e = window.location.host;

            var a = window.location.href;

            if (isSubdomain(arguments[1], e) == 1) {

                f = f + "/#m/" + a;

                b = true

            } else {

                if (isSubdomain(arguments[1], e) == 2) {

                    f = f + "/#m/" + a;

                    b = true

                } else {

                    f = a;

                    b = false

                }

            }

        } else {

            b = true

        }

        if (b) {

            var c = window.location.hash;

            if (!c.match("fromapp")) {

                if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i))) {

                    location.replace(f)

                }

            }

        }

    } catch(d) {}

}

function isSubdomain(c, d) {

    this.getdomain = function(f) {

        var e = f.indexOf("://");

        if (e > 0) {

            var h = f.substr(e + 3)

        } else {

            var h = f

        }

        var g = /^www\./;

        if (g.test(h)) {

            h = h.substr(4)

        }

        return h

    };

    if (c == d) {

        return 1

    } else {

        var c = this.getdomain(c);

        var b = this.getdomain(d);

        if (c == b) {

            return 1

        } else {

            c = c.replace(".", "\\.");

            var a = new RegExp("\\." + c + "$");

            if (b.match(a)) {

                return 2

            } else {

                return 0

            }

        }

    }

};

建议站长及web开发人员使用如下压缩后的js脚本

function uaredirect(f){try{if(document.getElementById("bdmark")!=null){return}var b=false;if(arguments[1]){var e=window.location.host;var a=window.location.href;if(isSubdomain(arguments[1],e)==1){f=f+"/#m/"+a;b=true}else{if(isSubdomain(arguments[1],e)==2){f=f+"/#m/"+a;b=true}else{f=a;b=false}}}else{b=true}if(b){var c=window.location.hash;if(!c.match("fromapp")){if((navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i))){location.replace(f)}}}}catch(d){}}function isSubdomain(c,d){this.getdomain=function(f){var e=f.indexOf("://");if(e>0){var h=f.substr(e+3)}else{var h=f}var g=/^www\./;if(g.test(h)){h=h.substr(4)}return h};if(c==d){return 1}else{var c=this.getdomain(c);var b=this.getdomain(d);if(c==b){return 1}else{c=c.replace(".","\\.");var a=new RegExp("\\."+c+"$");if(b.match(a)){return 2}else{return 0}}}};

PS：在此小编为大家推荐几款javascript格式化美化与压缩工具，类似上述的百度跳转代码压缩与格式化就可使用下述工具实现：

C语言风格/HTML/CSS/json代码格式化美化工具：
http://tools.3water.com/code/ccode_html_css_json

在线JavaScript代码美化、格式化工具：
http://tools.3water.com/code/js

JavaScript代码美化/压缩/格式化/加密工具：
http://tools.3water.com/code/jscompress

JavaScript在线压缩工具：
http://tools.3water.com/code/js_yasuo

JavaScript在线格式化工具(基于beautify.js插件)：
http://tools.3water.com/code/js_beautify