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鍍金池/ 問(wèn)答/HTML/ 請(qǐng)問(wèn)這段javascript js 代碼是在做什么呢?

請(qǐng)問(wèn)這段javascript js 代碼是在做什么呢?

下面的代碼似乎生成了一個(gè)cInfo對(duì)象, 我想了解他是怎么做的.

有這么幾個(gè)問(wèn)題:

window["\x65\x76\x61\x6c"](function(p, a, c, k, e, d) {...} 這個(gè)是什么意思? 生成一個(gè)窗口然后執(zhí)行function(){}函數(shù)?

在return p; 后面跟了一大堆亂碼一樣的數(shù)字, 這些是什么? 是一種值嗎? js里面有這樣引用值的方法?

感謝.

window["\x65\x76\x61\x6c"](function(p, a, c, k, e, d) {
    e = function(c) {
        return (c < a ? "" : e(parseInt(c / a))) + ((c = c % a) > 35 ? String.fromCharCode(c + 29) : c.toString(36))
    }
    ;
    if (!''.replace(/^/, String)) {
        while (c--)
            d[e(c)] = k[c] || e(c);
        k = [function(e) {
            return d[e]
        }
        ];
        e = function() {
            return '\\w+'
        }
        ;
        c = 1;
    }
    ;while (c--)
        if (k[c])
            p = p.replace(new RegExp('\\b' + e(c) + '\\b','g'), k[c]);
    return p;
}('28 2v={"2w":29,"2z":"2A.2o","2m":"29.4","2n":2q,"2r":"2P","2N":["2-2S-2R.4.1","2-2L-2G.4.1","2-1L-2E.4.1","2-1L-2H.4.1","2-1G-2I.4.1","2-1G-24.4.1","2-2k-2e.4.1","2-2h-2a.4.1","2-1P-2j.4.1","2-1P-22.4.1","2-1W-3A.3.1","2-1W-3B.3.1","2-1N-3C.3.1","2-1N-3r.3.1","2-1t-3w.3.1","2-1t-3P.3.1","2-1K-3O.3.1","2-1K-3S.3.1","2-1H-3M.3.1","2-1H-3I.3.1","2-1I-3K.3.1","2-1I-35.3.1","2-1v-36.3.1","2-1v-37.3.1","2-1B-2X.3.1","2-1B-31.3.1","2-21-2Z.3.1","2-21-3l.3.1","2-20-3o.3.1","2-20-3h.3.1","2-1V-3a.3.1","2-1V-3f.3.1","2-w-3e.3.1","2-w-3g.3.1","2-A-3d.3.1","2-A-3b.3.1","2-r-3c.3.1","2-r-3m.3.1","2-v-3n.3.1","2-v-3i.3.1","2-G-3j.3.1","2-G-3k.3.1","2-K-30.3.1","2-K-2Y.3.1","2-B-2V.3.1","2-B-2W.3.1","2-F-32.3.1","2-F-38.3.1","2-b-39.3.1","2-b-33.3.1","2-d-34.3.1","2-d-3p.3.1","2-8-3J.3.1","2-8-3L.3.1","2-5-3F.3.1","2-5-3G.3.1","2-k-3H.3.1","2-k-3R.3.1","2-o-3T.3.1","2-o-3Q.3.1","2-f-3N.3.1","2-f-3u.3.1","2-j-3v.3.1","2-j-3t.3.1","2-L-3q.3.1","2-L-3s.3.1","2-1d-3x.3.1","2-1d-3D.3.1","2-1g-3E.3.1","2-1g-3y.3.1","2-18-3z.3.1","2-18-2U.3.1","2-1b-27.3.1","2-1b-2c.3.1","2-1n-2f.3.1","2-1n-23.3.1","2-1q-26.3.1","2-1q-2d.3.1","2-1i-2b.3.1","2-1i-2i.3.1","2-1l-2g.3.1","2-1l-25.3.1","2-S-2l.3.1","2-S-2K.3.1","2-V-2J.3.1","2-V-2D.3.1","2-N-2F.3.1","2-N-2Q.3.1","2-Q-2T.3.1","2-Q-2M.3.1","2-12-2O.3.1","2-12-2t.3.1","2-16-2s.3.1","2-16-2p.3.1","2-X-2u.3.1","2-X-2C.3.1","2-10-2B.3.1","2-10-2y.3.1","2-D-2x.3.1","2-D-5C.3.1","2-Z-5B.3.1","2-Z-5D.3.1","2-Y-5F.3.1","2-Y-5E.3.1","2-W-5x.3.1","2-W-5w.3.1","2-14-5y.3.1","2-14-5A.3.1","2-13-5z.3.1","2-13-5M.3.1","2-11-5L.3.1","2-11-5N.3.1","2-P-5P.3.1","2-P-5O.3.1","2-O-5H.3.1","2-O-5G.3.1","2-M-5I.3.1","2-M-5K.3.1","2-U-5J.3.1","2-U-5i.3.1","2-T-5h.3.1","2-T-5j.3.1","2-R-5l.3.1","2-R-5k.3.1","2-17-5d.3.1","2-17-5c.3.1","2-1m-5e.3.1","2-1m-5g.3.1","2-1k-5f.3.1","2-1k-5s.3.1","2-1j-5r.3.1","2-1j-5t.3.1","2-1r-5v.3.1","2-1r-5u.3.1","2-1p-5n.3.1","2-1p-5m.3.1","2-1o-5o.3.1","2-1o-5q.3.1","2-1c-5p.3.1","2-1c-6g.3.1","2-1a-6f.3.1","2-1a-6h.3.1","2-19-6j.3.1","2-19-6i.3.1","2-1h-6b.3.1","2-1h-6a.3.1","2-1f-6c.3.1","2-1f-6e.3.1","2-1e-6d.3.1","2-1e-6r.3.1","2-h-6q.3.1","2-h-6s.3.1","2-i-6t.3.1","2-i-6l.3.1","2-e-6k.3.1","2-e-6p.3.1","2-g-6o.3.1","2-g-6n.3.1","2-n-6m.3.1","2-n-5W.3.1","2-p-5V.3.1","2-p-5X.3.1","2-l-5Z.3.1","2-l-5Y.3.1","2-m-5R.3.1","2-m-5Q.3.1","2-7-5S.3.1","2-7-5U.3.1","2-6-5T.3.1","2-6-66.3.1","2-c-65.3.1","2-c-67.3.1","2-9-69.3.1","2-9-68.3.1","2-q-61.3.1","2-q-60.3.1","2-E-62.3.1","2-E-64.3.1","2-1T-63.3.1","2-1T-4k.3.1","2-C-4j.3.1","2-C-4l.3.1","2-J-4n.4.1","2-J-4m.4.1","2-I-4f.4.1","2-I-4e.4.1","2-H-4g.4.1","2-H-4i.4.1","2-u-4h.4.1","2-u-4u.4.1","2-t-4t.4.1","2-t-4v.4.1","2-s-4x.4.1","2-s-4w.4.1","2-z-4p.4.1","2-z-4o.4.1","2-y-4q.3.1","2-y-4s.3.1","2-x-4r.3.1","2-x-40.3.1","2-1U-3Z.3.1","2-1U-41.3.1","2-1X-43.3.1","2-1X-42.3.1","2-1S-3V.3.1","2-1S-3U.3.1","2-1Y-3W.3.1","2-1Y-3Y.3.1","2-1y-3X.3.1","2-1y-4a.3.1","2-1A-49.3.1","2-1A-4b.3.1","2-1u-4d.3.1","2-1u-4c.3.1","2-1C-45.3.1","2-1C-44.3.1","2-1M-46.3.1","2-1M-48.3.1","2-1F-47.3.1","2-1F-4Y.3.1","2-1D-4X.3.1","2-1D-4Z.3.1","2-1J-51.3.1","2-1J-50.3.1","2-1s-4T.3.1","2-1s-4S.3.1","2-1x-4U.3.1","2-1x-4W.3.1","2-1Z-4V.4.1","2-1Z-58.4.1","2-1O-57.4.1","2-1O-59.4.1","2-1Q-5b.4.1","2-1Q-5a.4.1","2-1R-53.4.1","2-1R-52.4.1","2-1z-54.3.1","2-1z-56.3.1","2-1w-55.3.1","2-1w-4E.3.1","2-1E-4D.3.1","2-1E-4F.3.1","2-4H-4G.3.1","2-4z-4y.4.1"],"4A":4C,"4B":4O,"4N":"/4P/a/4R/15/","4Q":0,"4J":"4I","4K":0,"4M":4L}||{};', 62, 402, '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='['\x73\x70\x6c\x69\x63']('\x7c'), 0, {}))
回答
編輯回答
互擼娃

"x65x76x61x6c"是ascii碼的十六進(jìn)制表示方式，結(jié)果是eval，所以window["x65x76x61x6c"]就是調(diào)用window.eval()方法；
后面的代碼是立即執(zhí)行的函數(shù)表達(dá)式(function (a) { return p } (b)),這里的b就是你所問(wèn)的return p;之后的一大堆數(shù)字，他們是傳遞給這個(gè)函數(shù)的參數(shù)，這個(gè)函數(shù)返回一個(gè)結(jié)果p，這個(gè)p就是window.eval()方法的參數(shù)；
總結(jié)一下：

1. window["\x65\x76\x61\x6c"]是調(diào)用`window.eval()`
2. `window.eval()`的參數(shù)是后面函數(shù)的返回結(jié)果p
3. 函數(shù)后面跟著的括號(hào)表示這個(gè)是個(gè)立即執(zhí)行的函數(shù)表達(dá)式，即這個(gè)函數(shù)會(huì)馬上執(zhí)行
4. 這個(gè)括號(hào)里面的東西是傳遞給函數(shù)的，函數(shù)執(zhí)行時(shí)需要的參數(shù)

希望能夠幫助到你：）

2017年7月19日 08:30
編輯回答
歆久

</servlet-mapping>
這個(gè)是前端控制器設(shè)計(jì)模式的實(shí)現(xiàn)，提供Spring Web MVC的集中訪問(wèn)點(diǎn)，而且負(fù)責(zé)職責(zé)的分派，而且與Spring IoC容器無(wú)縫集成，從而可以獲得Spring的所有好處
DispatcherServlet主要用作職責(zé)調(diào)度工作，本身主要用于控制流程，主要職責(zé)如下：

文件上傳解析，如果請(qǐng)求類(lèi)型是multipart將通過(guò)MultipartResolver進(jìn)行文件上傳解析；
通過(guò)HandlerMapping，將請(qǐng)求映射到處理器（返回一個(gè)HandlerExecutionChain，它包括一個(gè)處理器、多個(gè)HandlerInterceptor攔截器）；
通過(guò)HandlerAdapter支持多種類(lèi)型的處理器(HandlerExecutionChain中的處理器)；
通過(guò)ViewResolver解析邏輯視圖名到具體視圖實(shí)現(xiàn)；
本地化解析；
渲染具體的視圖等；
如果執(zhí)行過(guò)程中遇到異常將交給HandlerExceptionResolver來(lái)解析。

load-on-startup：表示啟動(dòng)容器時(shí)初始化該Servlet；如果它存在，則它將在應(yīng)用程序啟動(dòng)時(shí)裝在servlet并調(diào)用它的init方法。若不存在，則在該servlet的第一個(gè)請(qǐng)求時(shí)加載。
url-pattern：表示哪些請(qǐng)求交給Spring Web MVC處理， “/” 是用來(lái)定義默認(rèn)servlet映射的。也可以如“*.html”表示攔截所有以html為擴(kuò)展名的請(qǐng)求。

該DispatcherServlet默認(rèn)使用WebApplicationContext作為上下文，Spring默認(rèn)配置文件為“/WEB-INF/[servlet名字]-servlet.xml”。
<listener>

2018年7月12日 13:07
編輯回答
心悲涼

windows["\x65\x76\x61\x6c"]是一個(gè)函數(shù)，函數(shù)的參數(shù)是一個(gè)立即調(diào)用的新函數(shù)，'28...'是調(diào)用這個(gè)新函數(shù)的參數(shù)，代碼的結(jié)構(gòu)大致相當(dāng)于：

console.log(function(a){
    return a + 1;
}(1) 
);
// 輸出2
2017年12月31日 20:36
編輯回答
悶油瓶

你輸出一下就知道了
"\x65\x76\x61\x6c" == eval
'D4dwpgRgD'['\x73\x70\x6c\x69\x63']('\x7c') == 'D4dwpgRgD'[splic]('|') 這里報(bào)錯(cuò)，應(yīng)該是split切割字符串為數(shù)組
簡(jiǎn)化一下：

window.eval(function(a){
    /* 自執(zhí)行匿名函數(shù)
     * function show(){};
     * show();
     * 等于下面   
     * function show(){}();
     */
  console.log(a)//[ "abc", "sdef", "hhh" ];
  return "alert(1)"http://因?yàn)橛胑val所有這里講字符串解析執(zhí)行 彈窗1
}("abc|sdef|hhh".split('|')))
2017年9月20日 04:13