js的常用方法

var Jade = {};
Jade.util = {
    addEvent: function (target, eventType, eventHandle, param) {
        //deal param
        var regEventHandle = eventHandle
        if(param) {
            regEventHandle = function() {
                eventHandle.call(this, param);
            }
        }

        if (! +"\v1") {
            target['e' + eventType + regEventHandle] = regEventHandle;
            target.attachEvent('on' + eventType, function () {
                target['e' + eventType + regEventHandle]();
            });
        } else {
            target.addEventListener(eventType, regEventHandle, false);
        }
    }, // addEvent
    // detach event
    removeEvent: function (target, eventType, eventHandle) {
        if (target.removeEventListener) { //w3c
            target.removeEventListener(eventType, eventHandle, false);
        } else if (target.detachEvent) { // ie
            target.detachEvent("on" + eventType, eventHandle);
        } else {
            target["on" + eventType] = null;
        }
    }, // removeEvent
    addEvents: function (target, eventTypes, fn) {
        types = types.split(",");
        for (var i = 0; i < types.length; i++) {
            this.addEvent(target, types[i], fn);
        }
    }, // addEvents

    $$ : function(id) {
        return !id ? null : document.getElementById(id);
    },

    insertRange : function(el,content) {
        var range,curPosition;

        if(! +"\v1") {
            range = document.selection.createRange();
            range.moveStart("character", -el.value.length);
            curPosition = range.text.length;
        }else {
            curPosition = el.selectionStart;
        }

        var v = el.value;
        el.value = v.substr(0,curPosition) + content + v.substr(curPosition,v.length);
    },//textRange

    $C : function(classname,ele,tag) {
        var returns = [];
        ele = ele || document;
        tag = tag || '*';

        if(ele.getElementsByClassName) {
            var eles = ele.getElementsByClassName(classname);
            if(tag != '*') {
                for(var i=0, L=eles.length; i<L; i++) {
                    if(eles[i].tagName.toLowerCase() == tag.toLowerCase()) {
                        returns.push[eles[i]];
                    }
                }
            }else {
                returns = eles;
            }
        }else {
            eles = ele.getElementsByTagName(tag);
            var pattern = new RegExp("(^|\\s)"+classname+"(\\s|$)");
            for (i = 0, L = eles.length; i < L; i++) {
                    if (pattern.test(eles[i].className)) {
                            returns.push(eles[i]);
                    }
            }
        }

        return returns;
    },//getElementsByClassName

};

Jade.webhttp = {

}