Js jquery 一些公用方法

//超出隐藏公用方法function strOverHidden(str, maxNum, appendStr) {    var len = str.length;    var appLen = appendStr.length;    if (len > maxNum) {        return str.substr(0, maxNum) + appendStr;    }    return str;}//异步异常处理function error(msg) {    $("body").html("");    $("body").html(msg.responseText);}//字符串非空验证function isNullOrEmpty(val) {    return (val == null || val == undefined || val == "");}//增加ALERT 框大小function alertWindowSize(size) {    $(".regsuccess").closest(".window").css({ "width": size, left: ($(window).width() - size) / 2 })    .find(".panel-header").css("width", size);    $(".regsuccess").closest(".window").find(".messager-button").css({ "padding": 10 });    $(".regsuccess").closest(".window-body").css("width", size - 22);}//增加confirm 框大小function confirmWindowSize(size) {    $(".consuccess").closest(".window").css({ "width": size, left: ($(window).width() - size) / 2 })    .find(".panel-header").css("width", size);    $(".consuccess").closest(".window").find(".messager-button").css({ "padding": 10 });    $(".consuccess").closest(".window-body").css("width", size - 22);}//清空验证状态function validateStatusClear() {    $("[name=spanValMesBox]").remove();    $(".validatebox-invalid").removeClass("validatebox-invalid");}function vf() { }/// <summary>///  飞动效果/// </summary>/// <param name="id">要飞的控件ID</param>/// <param name="changeIdstr">要飞到的控件ID和要飞的控件ID的区别字符串</param>///<param name="isAfter">区别字符串是否放在后面</param>function KaiXuan_fly(id, changeIdstr, isAfter) {    var thisoff = $("#" + id).offset();    var flyToObjectId = isAfter ? ("#" + id + changeIdstr) : ("#" + changeIdstr + id);    var flyId = id + "thisfly";    if ($("#" + flyId).size() == 0) {        var flyToObjectOff = $(flyToObjectId).offset();        var flyObject = $("<div>").attr("id", flyId)        .css({            position: "absolute",            "z-index": 900000,            left: thisoff.left,            top: thisoff.top        });        flyObject.append($("#" + id).find("img").clone(true));        $("body").append(flyObject);        $("#" + flyId).find("img").animate({            left: flyToObjectOff.left,            top: flyToObjectOff.top,            opacity: 0.5,            width: 10,            height: 10        }, 800, function () {        });        $("#" + flyId).animate({            left: flyToObjectOff.left,            top: flyToObjectOff.top,            opacity: 0.5,            width: 10,            height: 10        }, 800, function () {            $(this).remove();        });    }}$.fn.extend({    //DOC元素如果高度小于最小值则该元素高度等于这个最小值 www.52mvc.com    minHeigth: function (minHeigth) {        var tw = this.height();        if (tw < minHeigth) {            this.css({ height: minHeigth })        }    },    watermark: function (watermarkText) {        this.attr("title", watermarkText);        this.val(watermarkText);        this.css({ color: "#666666" });        this.click(function () {            var ts = $(this);            var tsVal = ts.val();            if (watermarkText == tsVal) {                ts.val("");                ts.removeAttr("style");            }        })        this.blur(function () {            var ts = $(this);            var title = ts.attr("title");            var tsVal = ts.val();            if (isNullOrEmpty(tsVal)) {                ts.val(title);                $(this).css({ color: "#666666" });            }        })    }, setData: function (v) {        var ts = $(this);        var key = ts.attr("key");        if (key == null) {            key = "mydata" + Math.random();            ts.attr("key", key);        }        $("body").data(key, v);    }, getData: function () {        var ts = $(this);        var key = ts.attr("key");        return $("body").data(key);    }})function copyToClipboard(txt) {    if (window.clipboardData) {        window.clipboardData.clearData();        window.clipboardData.setData("Text", txt);    } else if (navigator.userAgent.indexOf("Opera") != -1) {        window.location = txt;    } else if (window.netscape) {        try {            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");        } catch (e) {            alert("被浏览器拒绝！\n请在浏览器地址栏输入'about:config'并回车\n然后将 'signed.applets.codebase_principal_support'设置为'true'");        }        var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);        if (!clip)            return;        var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);        if (!trans)            return;        trans.addDataFlavor('text/unicode');        var str = new Object();        var len = new Object();        var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);        var copytext = txt;        str.data = copytext;        trans.setTransferData("text/unicode", str, copytext.length * 2);        var clipid = Components.interfaces.nsIClipboard;        if (!clip)            return false;        clip.setData(trans, null, clipid.kGlobalClipboard);    }    $.messager.alert("复制成功！", "复制成功！");}