查看“MediaWiki:Common.js”的源代码

var usesClass = (function() {
    var reCache = {};
    return function(element, className) {
        return (reCache[className] ? reCache[className] : (reCache[className] = new RegExp("(?:\\s|^)" + className + "(?:\\s|$)"))).test(element.className);
    };
})();

/* JavaScript for rounding borders
   Source: http://webdesign.html.it/articoli/leggi/528/more-nifty-corners */

function NiftyCheck() {
    if (!document.getElementById || !document.createElement)
        return (false);
    isXHTML = /html\:/.test(document.getElementsByTagName('body')[0].nodeName);
    if (Array.prototype.push == null) {
        Array.prototype.push = function() {
            this[this.length] = arguments[0];
            return (this.length);
        }
    }
    return (true);
}

function Rounded(selector, wich, bk, color, opt) {
    var i, prefixt, prefixb, cn = "r",
        ecolor = "",
        edges = false,
        eclass = "",
        b = false,
        t = false;

    if (color == "transparent") {
        cn = cn + "x";
        ecolor = bk;
        bk = "transparent";
    } else if (opt && opt.indexOf("border") >= 0) {
        var optar = opt.split(" ");
        for (i = 0; i < optar.length; i++)
            if (optar[i].indexOf("#") >= 0) ecolor = optar[i];
        if (ecolor == "") ecolor = "#666";
        cn += "e";
        edges = true;
    } else if (opt && opt.indexOf("smooth") >= 0) {
        cn += "a";
        ecolor = Mix(bk, color);
    }
    if (opt && opt.indexOf("small") >= 0) cn += "s";
    prefixt = cn;
    prefixb = cn;
    if (wich.indexOf("all") >= 0) {
        t = true;
        b = true
    } else if (wich.indexOf("top") >= 0) t = "true";
    else if (wich.indexOf("tl") >= 0) {
        t = "true";
        if (wich.indexOf("tr") < 0) prefixt += "l";
    } else if (wich.indexOf("tr") >= 0) {
        t = "true";
        prefixt += "r";
    }
    if (wich.indexOf("bottom") >= 0) b = true;
    else if (wich.indexOf("bl") >= 0) {
        b = "true";
        if (wich.indexOf("br") < 0) prefixb += "l";
    } else if (wich.indexOf("br") >= 0) {
        b = "true";
        prefixb += "r";
    }
    var v = getElementsBySelector(selector);
    var l = v.length;
    for (i = 0; i < l; i++) {
        if (edges) AddBorder(v[i], ecolor);
        if (t) AddTop(v[i], bk, color, ecolor, prefixt);
        if (b) AddBottom(v[i], bk, color, ecolor, prefixb);
    }
}

function AddBorder(el, bc) {
    var i;
    if (!el.passed) {
        if (el.childNodes.length == 1 && el.childNodes[0].nodeType == 3) {
            var t = el.firstChild.nodeValue;
            el.removeChild(el.lastChild);
            var d = CreateEl("span");
            d.style.display = "block";
            d.appendChild(document.createTextNode(t));
            el.appendChild(d);
        }
        for (i = 0; i < el.childNodes.length; i++) {
            if (el.childNodes[i].nodeType == 1) {
                el.childNodes[i].style.borderLeft = "1px solid " + bc;
                el.childNodes[i].style.borderRight = "1px solid " + bc;
            }
        }
    }
    el.passed = true;
}

function AddTop(el, bk, color, bc, cn) {
    var i, lim = 4,
        d = CreateEl("b");

    if (cn.indexOf("s") >= 0) lim = 2;
    if (bc) d.className = "artop";
    else d.className = "rtop";
    d.style.backgroundColor = bk;
    for (i = 1; i <= lim; i++) {
        var x = CreateEl("b");
        x.className = cn + i;
        x.style.backgroundColor = color;
        if (bc) x.style.borderColor = bc;
        d.appendChild(x);
    }
    el.style.paddingTop = 0;
    el.insertBefore(d, el.firstChild);
}

function AddBottom(el, bk, color, bc, cn) {
    var i, lim = 4,
        d = CreateEl("b");

    if (cn.indexOf("s") >= 0) lim = 2;
    if (bc) d.className = "artop";
    else d.className = "rtop";
    d.style.backgroundColor = bk;
    for (i = lim; i > 0; i--) {
        var x = CreateEl("b");
        x.className = cn + i;
        x.style.backgroundColor = color;
        if (bc) x.style.borderColor = bc;
        d.appendChild(x);
    }
    el.style.paddingBottom = 0;
    el.appendChild(d);
}

function CreateEl(x) {
    if (isXHTML) return (document.createElementNS('http://www.w3.org/1999/xhtml', x));
    else return (document.createElement(x));
}

function getElementsBySelector(selector) {
    var i, selid = "",
        selclass = "",
        tag = selector,
        f, s = [],
        objlist = [];

    if (selector.indexOf(" ") > 0) { //descendant selector like "tag#id tag"
        s = selector.split(" ");
        var fs = s[0].split("#");
        if (fs.length == 1) return (objlist);
        f = document.getElementById(fs[1]);
        if (f) return (f.getElementsByTagName(s[1]));
        return (objlist);
    }
    if (selector.indexOf("#") > 0) { //id selector like "tag#id"
        s = selector.split("#");
        tag = s[0];
        selid = s[1];
    }
    if (selid != "") {
        f = document.getElementById(selid);
        if (f) objlist.push(f);
        return (objlist);
    }
    if (selector.indexOf(".") > 0) { //class selector like "tag.class"
        s = selector.split(".");
        tag = s[0];
        selclass = s[1];
    }
    var v = document.getElementsByTagName(tag); // tag selector like "tag"
    if (selclass == "")
        return (v);
    for (i = 0; i < v.length; i++) {
        if (v[i].className.indexOf(selclass) >= 0) {
            objlist.push(v[i]);
        }
    }
    return (objlist);
}

function Mix(c1, c2) {
    var i, step1, step2, x, y, r = new Array(3);
    if (c1.length == 4) step1 = 1;
    else step1 = 2;
    if (c2.length == 4) step2 = 1;
    else step2 = 2;
    for (i = 0; i < 3; i++) {
        x = parseInt(c1.substr(1 + step1 * i, step1), 16);
        if (step1 == 1) x = 16 * x + x;
        y = parseInt(c2.substr(1 + step2 * i, step2), 16);
        if (step2 == 1) y = 16 * y + y;
        r[i] = Math.floor((x * 50 + y * 50) / 100);
    }
    return ("#" + r[0].toString(16) + r[1].toString(16) + r[2].toString(16));
}

function doRoundEdges() {
    if (!NiftyCheck())
        return;
    Rounded("div#nifty", "all", "#FFF", "#D4DDFF", "smooth");
}

addOnloadHook(doRoundEdges);











/* IE Correction Code **********************************************
 * Description: This is code to fix known bugs in IE
 * Detects if an IE browser and applies browser-specific code
 * Author: User:Bigfoot Lover @ Bionic Wiki
 * Added: 8 October 2007
 * Modified 18 October 2007 to fix ie imagemap bug
 */

// setStyleById: given an element id, style property and 
// value, apply the style.
// args:
//  i - element id
//  p - property
//  v - value
//
function setStyleById(i, p, v) {
    var n = document.getElementById(i);
    n.style[p] = v;
}

/* Add a hook to perform code on every pageload */
addOnloadHook(performIE);

function performIE() {
    if (-1 != navigator.userAgent.indexOf("MSIE")) {
        /* perform Microsoft Internet Explorer-specific subs */
        var Divs = document.getElementsByTagName("div");
        var divCnt = 0;
        var divID = "";
        if (Divs.length > 0) {
            var CurrDiv = Divs[0];
            var s = "";
            while (Divs.length > divCnt) {
                s = eval("CurrDiv.style.ietop");
                if ((s != "") && (s != null)) {
                    divID = "mapDiv" + divCnt;
                    CurrDiv.setAttribute("id", divID);
                    setStyleById(divID, "top", CurrDiv.style.ietop);
                }
                divCnt++;
                CurrDiv = Divs[divCnt];
            }
        }
    }
}

//Get Ad Dart Number
var randDARTNumber = 0;

function genSetRandDARTNumber() {
    randDARTNumber = Math.round(Math.random() * 1000000000000);
}
genSetRandDARTNumber();

/* </pre> */
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