global js库

var GLOBAL = {};
GLOBAL.namespace = function(str) {
    var arr = str.split("."), o = GLOBAL,i;
    for (i = (arr[0] = "GLOBAL") ? 1 : 0; i < arr.length; i++) {
        o[arr[i]] = o[arr[i]] || {};
        o = o[arr[i]];
    }
};
//Dom相关
GLOBAL.namespace("Dom");

GLOBAL.Dom.getNextNode = function (node) {
    node = typeof node == "string" ? document.getElementById(node) : node;
    var nextNode = node.nextSibling;
    if (!nextNode) {
        return null;
    }
    if (!document.all) {
        while (true) {
            if (nextNode.nodeType == 1) {
                break;

            } else {
                if (nextNode.nextSibling) {
                    nextNode = nextNode.nextSibling;
                } else {
                    break;
                }
            }
        }
        return nextNode;
    }
}

GLOBAL.Dom.setOpacity = function(node, level) {
    node = typeof node == "string" ? document.getElementById(node) : node;
    if (document.all) {
        node.style.filter = 'alpha(opacity=' + level + ')';
    } else {
        node.style.opacity = level / 100;
    }
};

GLOBAL.Dom.getElementsByClassName = function (str, root, tag) {
    if (root) {
        root = typeof root == "string" ? document.getElementById(root) : root;
    } else {
        root = document.body;
    }
    tag = tag || "*";
    var els = root.getElementsByTagName(tag), arr = [];
    for (var i = 0, n = els.length; i < n; i++) {
        for (var j = 0, k = els[i].className.split(" "), l = k.length; j < l; j++) {
            if (k[j] == str) {
                arr.push(els[i]);
                break;
            }
        }
    }
    return arr;
}
GLOBAL.namespace("Event");
GLOBAL.Event.stopPropagation = function(e) {
    e = window.event || e;
    if (document.all) {
        e.cancelBubble = true;
    } else {
        e.stopPropagation();
    }
};
GLOBAL.Event.getEventTarget = function(e) {
    e = window.event || e;
    return e.srcElement || e.target;
};

GLOBAL.Event.on = function(node, eventType, handler) {
    node = typeof node == "string" ? document.getElementById(node) : node;
    if (document.all) {
        node.attachEvent("on" + eventType, handler);
    } else {
        node.addEventListener(eventType, handler, false);
    }
};

//Lang相关
GLOBAL.namespace("Lang");
GLOBAL.Lang.trim = function(ostr) {
    return ostr.replace(/^\s+|\s+$/g, "");
};

GLOBAL.Lang.isNumber = function(s) {
    return !isNaN(s);
};

function isString(s) {
    return typeof s === "string";
}

function isBoolean(s) {
    return typeof s === "boolean";
}

function isFunction(s) {
    return typeof s === "function";
}

function isNull(s) {
    return s === null;
}

function isUndefined(s) {
    return typeof s === "undefined";
}

function isEmpty(s) {
    return /^\s*$/.test(s);
}

function isArray(s) {
    return s instanceof Array;
}

GLOBAL.Dom.get = function (node) {
    node = typeof node === "string" ? document.getElementById(node) : node;
    return node;
}

function $(node) {
    node = typeof node == "string" ? document.getElementById(node) : node;
    return node;
}

GLOBAL.Lang.extend = function(subClass, superClass) {
    var F = function() {
    };
    F.prototype = superClass.prototype;
    subClass.prototype = new F();
    subClass.prototype.constructor = subClass;
    subClass.superClass = subClass.prototype;
    if (superClass.prototype.constructor == Object.prototype.constructor) {
        superClass.prototype.constructor = superClass;
    }
};

GLOBAL.namespace("Cookie");
GLOBAL.Cookie = {
    read: function (name) {
        var cookieStr = ";" + document.cookie + ";";
        var index = cookieStr.indexOf(";" + name + "=");
        if (index != -1) {
            var s = cookieStr.substring(index + name.length + 3, cookieStr.length);
            return unescape(s.substring(0, s.indexOf(";")));
        } else {
            return null;
        }
    },
    set: function (name, value, expires) {
        var expDays = expires * 24 * 60 * 60 * 1000;
        var expDate = new Date();
        expDate.setTime(expDate.getTime() + expDays);
        var expString = expires ? ";expires=" + expDate.toGMTString() : "";
        var pathString = ";path=/";
        document.cookie = name + "=" + escape(value) + expString + pathString;
    },
    del: function (name, value, expires) {
        var exp = new Date(new Date().getTime() - 1);
        var s = this.read(name);
        if (s != null) {
            document.cookie = name + "=" + s + ";expires=" + exp.toGMTString() + ";path=/";
        }
    }
};