简单的 基于seajs一个base基础库

define(function(require,exports,module){  

    var base = {};
    var isIE_v=(function(){
        if (!!(window.attachEvent && navigator.userAgent.indexOf('Opera') === -1)) {
            return true;} else{return false; };
    }());     
    base.isIE = isIE_v;

    //浏览器 宽度与高度
    base.getBrowserWindowSize = (function () {
        var de = document.documentElement;
        return {
             window.innerWidth ||(de&&de.clientWidth) || document.body.clientWidth,
            height: window.innerHeight || (de && de.clientWidth) || document.body.clientWidth
        }
    } ());

    base.$=function(){
        var elements=[],
            element;
        for (var i = 0,max=arguments.length; i < max; i++) {
                    
            if (typeof arguments[i] === 'string') {
                element = document.getElementById(arguments[i]);
            } else {
                element = arguments[i];
            }
            if (max==1) {
                return element}else{
                elements.push(element)};
        };
        return elements;
    };

    //得到节点下的第一个元素子节点 如没有返回null
    base.getFirstElementNode = function (node) {
        if (!(node = base.$(node))) { return false };
        if (node.children.length > 0) {
            if (node.firstElementChild) {
                return node.firstElementChild;
            } else {
                return node.firstChild;
            }
        } else {
            return null;
        }
    };
    //得到节点下的最后一个子节点 如没有返回null
base.getLastElementNode=function(node){
    if (!(node=base.$(node))) { return false};
    if(node.children.length>0){
        if (node.lastElementChild) {
            return node.lastElementChild;
        } else{
            return node.lastChild;
        }
    } else{
        return null;
    }
};
//得到节点下面的直接元素子节点集合(第一层)
base.getElementsNode=function(parentnode){
    if(!(parentnode=base.$(parentnode))){return false;}
    return parentnode.children;
};
//获得元素节点的下一个节点 如果为最后一个返回null
base.getNextElementNode=function(node){
    if (!(node = base.$(node))) { return false; };
    var lastnode=base.getLastElementNode(node.parentNode);
    if(lastnode!=node){
        if(node.nextElementSibling){
            return node.nextElementSibling;
        } else{
            return node.nextSibling;
        }
    } else{
        return null;
    }      
};
    //获得元素节点的上一个节点 如果节点为第一个则返回null
base.getPreElementNode=function(node){
    if (!(node = base.$(node))) { return false; }
    var firstnode=base.getFirstElementNode(node.parentNode);
    if(firstnode!=node){
        if(node.previousElementSibling){
            return node.previousElementSibling;
        } else{
            return node.previousSibling;
        }
    } else{
        return null;
    }
};
    //新元素插入指定元素后面
base.insertAfter = function (newnode, node) {
    if (!(newnode = base.$(newnode)) || !(node = base.$(node))) { return false; }
    var parent = node.parentNode;
    if (base.getLastElementNode(parent) == node) {
        parent.appendChild(newnode);
    } else {
        parent.insertBefore(newnode, base.getNextElementNode(node));
    }
};
    //添加元素到第一个子节点
base.prependChild = function (newnode,parent) {
    if (!(newnode = base.$(newnode)) || !(parent = base.$(parent))) { return false; }
    var firstElementNode = base.getFirstElementNode(parent);
    if (firstElementNode) {
        parent.insertBefore(newnode, firstElementNode);
    } else {    
        parent.appendChild(newnode);
    }
};
    //删除元素的所有子节点
base.removeChildRen = function (parent) {
    if (!(parent = base.$(parent))) { return false; }
    while (parent.firstChild) {

        parent.firstChild.parentNode.removeChild(parent.firstChild);
    }
    return parent;
};
    //得到元素的文本节点
base.getElementText = function (node) {
    var t = "";
    var node = node.childNodes || node;
    var length = node.length;

    for (var i = 0; i < length; i++) {     
        t += node[i].nodeType != 1 ? node[i].nodeValue : getElementText(node[i].childNodes);
    }
    return t;
}
    //创建元素
base.createElement = function (tagname, attr) {
    var element = null;
    if (typeof tagname === "string") {
        element = document.createElement(tagname);
        var key, keyattr;
        for (key in attr) {
            key = key.toLowerCase();
            if (key == "styles" && typeof attr[key] === "object") {
                for (keyattr in attr[key]) {
                    element.style[keyattr] = attr[key][keyattr];
                    if (keyattr == "opacity") {
                        base.setOpacity(element, attr[key][keyattr]);
                    }
                }
            } else if (key == "classname" && typeof attr[key] === "string") {
                base.addClass(element, attr[key]);
            } else {                
                if (key == "id" && typeof attr[key] === "string") {
                    element.setAttribute("id", attr[key]);
                } else {
                    element.setAttribute(key, attr[key]);
                }
            }
        }
    }
    return element;
}
//元素可见性切换
base.toggleDisplay=function(node,value){
    if (!(node = base.$(node))) { return false; };
    if (node.style.display!='none') {
        node.style.display='none';
    } else{
        node.style.display=value||'';
    }
    return true;
};
base.hasClass = function (el,classname) {
    if (!(el = base.$(el))) { return false; }
    var aelclassname = base.stringToArray(el.className),
        aclassname = base.stringToArray(classname),
        length = aclassname.length,
        re = true;
    for (var i = 0; i < length; i++) {
        if (!aelclassname.contains(aclassname[i])) {
            re = false;
        }
    }
    return re;
}

base.addClass = function (el,classname) {
    if (!(el = base.$(el))) { return false; }
    var aelclassname = base.stringToArray(el.className),
        aclassname = base.stringToArray(classname);
    el.className = base.array.union(aelclassname, aclassname).join(' ');
    return el;
}
base.removeClass = function (el, classname) {
    if (!(el = base.$(el))) { return false; }
    var aelclassname = base.stringToArray(el.className),
        aclassname = base.stringToArray(classname);
    el.className = base.array.minus(aelclassname, aclassname).join(' ');
    return el;
}


    //根据class获得元素
base.getElementsByClassName = function (classname, parentnode, tagname) {
    var s = (parentnode || document).getElementsByTagName(tagname || "*"),
        classarr = base.FormatString(classname).split(' '),
        classlength = classarr.length;
    return function () {
        var a = [],
            lenght = s.length;
        for (var i = 0; i < lenght; i++) {
            if (!s[i].className) { continue; };
            if (base.hasClass(s[i], classname)) {
                a.push(s[i]);
            }
        }
        return a;
    }();
};
    //class切换 单个类
base.toggleClass = function (node, classname) {
    if (!(node = base.$(node))) { return false; }
    var classname = base.trim(classname);
    if (base.hasClass(node, classname)) {
        base.removeClass(node, classname);
    } else {
        base.addClass(node, classname);
    }
}

//设置元素的透明度
base.setOpacity=function(node,level){
    if(!(node=base.$(node))){ return  false;}
    if(base.isIE){
        node.style.filter="alpha(opacity="+level+")";
    } else{
        node.style.opacity=level/100;
    }
};
//获取元素的样式 
base.getStyle=function(node,stylename){
    if(!(node=base.$(node))) {return false;}
    if (node.currentStyle) {
        return node.currentStyle[stylename];
    } else{
        return node.ownerDocument.defaultView.getComputedStyle(node,null)[stylename];       
    }
}
//去除字符串两边的空白 
base.trim = function (str) {
    return  base.isString(str)===true?str.replace(/(^s*)|(s*$)/g, ""):false;
};
    //去除字符串左边的空白
base.Ltrim = function (str) {
    return base.isString(str) === true ? str.replace(/(^s*)/g, "") : false;
};
    //去除字符串右边的空白
base.Rtrim = function (str) {
    return base.isString(str) === true ? str.replace(/(s*$)/g, "") : false;
};
    //字符串中的多个空白替换为单个空白
base.Ctrim = function (str) {
    return base.isString(str) === true ? str.replace(/s+/g, ' ') : false;    
}
base.FormatString = function (str) {
    if (base.isString(str)) {
        return base.Ctrim(base.trim(str));
    } else { return false;}
}
    //字符串转换数组
base.stringToArray = function (str, s) {
    var s = s || ' ';
    return base.FormatString(str).split(s);
}
    //字符串重复
base.repeatString = function (str, num) {
    var temp = '';
    for (var i = 0; i < num; i++) {
        temp += str;
    }
    return temp;
}


//检查输入的字符串
base.isNumber=function(str){
    return Object.prototype.toString.call(str)==="[object Number]";
};
base.isString=function(str){
    return Object.prototype.toString.call(str) === "[object String]";
};
base.isBoolean=function(str){
    return Object.prototype.toString.call(str) === "[object Boolean]";
};
base.isObject = function (str) {
    return Object.prototype.toString.call(str) === "[object Object]";
}
base.isArray = function (str) {
    return Object.prototype.toString.call(str) === "[object Array]" && Array.isArray(str);

};
base.isFunction=function(obj){
    return Object.prototype.toString.call(obj) === "[object Function]";

};
base.isNull = function () {
    return str === null;

};
base.isEmpty=function(str){
    return  /^s*$/.test(str);

};
base.isUndefined=function(str){
    return typeof str === "undefined";
};
base.addEvent = function (node, type, fn) {
    if(!(node=base.$(node))){return false;}
    if (base.isIE) {
        node.attachEvent('on'+type,fn);
    } else if(document.addEventListener){
        node.addEventListener(type, fn, false);
    } else{
        node['on'+type]=fn;
    }
};
base.removeEvent = function (node, type, fn) {
    if (!(node = base.$(node))) { return false; }
    if (base.isIE) {
        node.detachEvent('on'+type,fn); 
    } else if(document.addEventListener){
        node.removeEventListener(type,fn,false);
    } else{
        node['on'+type]=null;
    }
};
    //获得事件对象
base.getEventObject = function (event) {

    return event || window.event;
}
    //取消事件的默认事件
base.preventDefault = function (event) {

    var ev = event || base.getEventObject(event);

    if (ev.preventDefault) {
        ev.preventDefault();
    } else {     
        ev.returnValue = false;
    }
}
 //得到事件目标对象
base.getEventTarget=function(e){
    var ev = e || base.getEventObject(e);
    var target = e.target || e.srcElement;
    //safari
    if (target.nodeType == 3) {
        target = target.parentNode;
    }
};
//取消冒泡事件
base.stopPropagation = function (e) {
    var ev = e || base.getEventObject(e);
    if (base.isIE) {
        ev.cancelBulle = true;
    } else{
        ev.stopPropagation();
    };
};
    //得到鼠标按键
base.getMouseButton = function (event) {
    var ev = event || base.getEventObject(event);
    var buttons = {
        'left': false,
        'middle': false,
        'right': false
    };
    if (ev.toString() && ev.toString().indexOf("MouseEvent") != -1) {     
        switch (ev.button) {
            case 0: buttons.left = true;
                break;
            case 1: buttons.middle = true;
                break;
            case 2: buttons.right = true;
                break;
            default: break;        
        }
    } else if (ev.button) {
        switch (ev.button) {
            case 1: buttons.left = true;
                break;
            case 2: buttons.right = true;
                break;
            case 3: buttons.left = true; buttons.right = true;
                break;
            case 4: buttons.middle = true;
                break;
            case 5: buttons.left = true; buttons.middle = true;
                break;
            case 6: buttons.middle = true; buttons.right = true;
                break;
            case 7: buttons.left = true; buttons.middle = true; buttons.right = true;
                break;
            default: break;
        }
    } else {
        return false;
    }
    return buttons;
}
    //得到鼠标的位置 相对于文档原点
base.getMousePointPositionInDocument = function (event) {
    var ev = event || base.getEventObject(event);
    var x = ev.pageX || ev.clientX + (document.body.scrollLeft || document.documentElement.scrollLeft);
    var y = ev.pageY || ev.clientY + (document.body.scrollTop || document.documentElement.scrollTop);
    return {
        'x': x,
        'y':y
    }
}
    //得到键盘按键信息
base.getKeyPress = function (event) {
    var ev = event || base.getEventObject(event);
    var code = ev.keyCode;
    var value = String.fromCharCode(code);
    return { 'code': code, 'value': value };
}
    //得到url的参数
base.getQueryString = function (name) {
    var reg = new RegExp("(^|&)" + name + "=([^&*])(&|$)","i");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) {
        return unescape(r[2]);
    } else {
        return null;
    }
}//基本的cookie操作
base.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) {
        var exp = new Date(new Date().getTime() - 1);
        var s = this.read(name);
        if (s != null) {
            document.cookie = name + "=" + s + ";expires = " + exp.toGMTString() + ";path=/"
        }
    }
}

    //数组的遍历

base.forEach = (function () {
    //数组与伪数组的遍历      context 
    var _Array_forEach = function (array, block, context) {
        if (array == null) return;
        //对String进行特殊处理
        if (base.isString(array)) {
            array = array.split('');
        }
        var i = 0, length = array.length;
        for (; i < length && block.call(context, array[i], (i + 1), array) !== false; i++) { }
    };
    //对象的遍历
    var _Function_forEach = function (object, block, context) {
        for (var key in object) {
            //只遍历本地属性  
            if (object.hasOwnProperty(key) && block.call(context, object[key], key, object) === false) {
                break;
            }
        }
    };
    return function (object, block, context) {
        if (object == null) return;
        if (base.isNumber(object.length)) {
            _Array_forEach(object, block, context);
        } else {
            _Function_forEach(object, block, context);
        }
    };
})()
 //两个数组的操作 基于第一个数组
base.array = {
    //两个数组的交集
    intersect: function (a, b) {
        return a.uniquelize().each(function (o) { return b.contains(o) ? o : null; });
    },
    //两个数组的差集
    minus: function (a,b) {
        return a.uniquelize().each(function (o) { return b.contains(o) ? null : o; })
    },
    //两个数组的并集
    union: function (a, b) {
        return a.concat(b).uniquelize();
    },
    //两个数组的补集
    complement: function (a,b) {
        return this.minus(this.union(a, b), this.intersect(a, b));
    }
}

    //对原型的扩展 
Array.prototype.contains = function (el) {
    return RegExp("\b" + el + "\b").test(this);
}
Array.prototype.each = function (fn) {
    var arr = [];
    var args = Array.prototype.slice.call(arguments, 1);
    var length = this.length;
    for (var i = 0; i < length; i++) {
        var erg = fn.apply(this, [this[i], i].concat(args));
        if (erg != null) {
            arr.push(this[i]);
        }
    }
    return arr;
}
Array.prototype.uniquelize = function () {
    var newarr = [];
    var length = this.length;
    for (var i = 0; i < length; i++) {
        if (!newarr.contains(this[i])) {
            newarr.push(this[i]);
        }
    }
    return newarr;
}

module.exports=base;

})

 以前写的一些方法集合 初步用seajs来进行模块化开发 考虑最多的 是兼容性的问题 . 只是一些方法的堆积,没有模式,感觉最简单的一个了. 学到兼容性的问题 也是一个进步.