学编写javascript类库

(function() {
    window['SoftLin'] = {}
    //等同于document.getElementById()
    //实现了多参数
    function $() {
        var elements = new Array();
        for (var i = 0; i < arguments.length; i++) {
            var element = arguments[i];

            if (typeof element == 'string') {
                element = document.getElementById(element);
            }
            if (arguments.length == 1) {
                return element;
            }
            elements.push(element);
        }
        return elements;
    }
    window['SoftLin']['$'] = $;
    //获许指定标签下Class名
    function getElementsByClassName(className, tag) {
        var allTags = document.getElementsByTagName(tag);
        var matchingElements = new Array();

        className = className.replace(/\-/g, "\\-");
        var regex = new RegExp("(^|\\s)" + className + "(\\s|$)");

        var element;
        for (var i = 0; i < allTags.length; i++) {
            element = allTags[i];
            if (regex.test(element.className)) {
                matchingElements.push(element);
            }
        }
        return matchingElements;


    }
    window['SoftLin']['getElementsByClassName'] = getElementsByClassName;
    //向DOM节点添加事件
    function addEvent(node, type, listener) {
        if (!(node = $(node)))
            return false;
        if (node.addEventListener) {
            node.addEventListener(type, listener, false);
            return true;
        } else if (node.attachEvent) {
            node['e' + type + listener] = listener;
            node[type + listener] = function() { node['e' + type + listener](window.event); }
            node.attachEvent('on' + type, node[type + listener]);
            return true;
        }
        return false;
    };
    window['SoftLin']['addEvent'] = addEvent;
    //向DOM节点后面添加节点
    function insertAfter() {
    }
    //删除多个子节点
    function removerChiildren() {
    }

    //将方法绑定到指定对象上
    function bindFunction(obj, func) {
        return function() {
            func.apply(obj, arguments);
        }
    }
    window['SoftLin']['bindFunction'] = bindFunction;

    //获取浏览器大小
    function getBrowserWindowSize() {
        var de = document.documentElement;
        return {
            'width': (
    window.innerWidth || (de && de.clientWidth) || document.body.clientWidth),
            'height': (
    window.innerHeight || (de && de.clientHeight) || document.body.clientHeight)
        }
    };
    window['SoftLin']['getBrowserWindowSize'] = getBrowserWindowSize;
    //nodeType常量 字面量方法定义
    window['SoftLin']['node'] = {
        ELEMENT_NODE: 1,
        ATTRIBUTE_NODE: 2,
        TEXT_NODE: 3,
        CDATE_SECTION_NODE: 4,
        ENTITY_REFERENCE_NODE: 5,
        ENTITY_NODE: 6,
        PROCESSING_INSTRUCTION_NODE: 7,
        COMMENT_NODE: 8,
        DOCUMENT_NODE: 9,
        DOCUMENT_TYPE_NODE: 10,
        DOCUMENT_FRAGMENT_NODE: 11,
        NOTATION_NODE: 12
    }
    //遍历节点
    function walkElementsLisner(func, node) {
        var root = node || window.document;
        var nodes = root.getElementsByTagName('*');
        for (var i = 0; i < nodes.length; i++) {
            func.call(nodes[i]);
        }
    };
    window['SoftLin']['walkElementsLisner'] = walkElementsLisner;

    //返回节点的深度
    function walkTheDOMRecursive(func, node, depth, returnFromParent) {
        var root = node || window.document;
        var returnFromParent = func.call(node, depth++, returnFromParent);
        var node = root.firstChild;
        while (node) {
            walkTheDOMRecursive(func, node, depth, returnFromParent);
            node = node.nextSibling;
        }
    };
    window['SoftLin']['walkTheDOMRecursive'] = walkTheDOMRecursive;
    //遍历节点的属性
    function walkTheDOMWithAttirubutes(node, func, depth, returnFromParent) {
        var root = node || window.document;
        returnFromParent = func.call(root, depth++, returnFromParent);
        if (root.attributes) {
            for (var i = 0; i < root.attributes.length; i++) {
                walkTheDOMWithAttirubutes(root.attributes[i], func, depth - 1, returnFromParent);

            }
        }
        if (root.nodeType != SoftLin.node.ATTRIBUTE_NODE) {
            node = root.firstChild;
            while (node) {
                walkTheDOMWithAttirubutes(node, func, depth, returnFromParent);
                node = node.nextSibling;
            }
        }
    }
    window['SoftLin']['walkTheDOMWithAttirubutes'] = walkTheDOMWithAttirubutes;

})();