百度判斷手機終端並自動跳轉js代碼及使用執行個體_javascript技巧

百度目前為站長提供了判斷手機終端類型並自動實現跳轉的js指令碼，極大的方便了廣大站長及web開發人員。其js指令碼的使用方法極其簡單。

複製代碼 代碼如下:

<script src="http://siteapp.baidu.com/static/webappservice/uaredirect.js" type="text/javascript"></script>
<SCRIPT type=text/javascript>uaredirect("手機站","WEB站");</SCRIPT>

其中最為核心的js指令碼格式化代碼如下所示：

複製代碼 代碼如下:

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
            }
        }
    }
};

建議站長及web開發人員使用如下壓縮後的js指令碼

複製代碼 代碼如下:

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：在此小編為大家推薦幾款javascript格式化美化與壓縮公用程式，類似上述的百度跳轉代碼壓縮與格式化就可使用下述工具實現：

C語言風格/HTML/CSS/json代碼格式化美化工具：
http://tools.jb51.net/code/ccode_html_css_json

線上JavaScript代碼美化、格式化工具：
http://tools.jb51.net/code/js

JavaScript代碼美化/壓縮/格式化/加密工具：
http://tools.jb51.net/code/jscompress

JavaScript在線壓縮工具：
http://tools.jb51.net/code/js_yasuo

JavaScript線上格式化工具(基於beautify.js外掛程式)：
http://tools.jb51.net/code/js_beautify