dom scrollX scrollY innerWidth cilentWidth

            function getScroll(){
                return {
                    x:window.pageXOffset?window.pageXOffset:document.body.scrollLeft+document.documentElement.scrollLeft,
                    y:window.pageYOffset?window.pageYOffset:document.body.scrollTop+document.documentElement.scrollTop,
                }
            }

            function getViewportWH(){
                if(window.innerWidth){
                    return {
                        w:window.innerWidth,
                        h:window.innerHeight,
                    }
                }else{
                    if(document.compatMode==='BackCompat'){
                        return {
                            w:document.body.clientWidth,
                            h:document.body.clientHeight,
                        }
                    }else{
                        return {
                            w:document.documentElement.clientWidth,
                            h:document.documentElement.clientHeight,
                        }
                    }
                }

            }
            console.log(getViewportWH())

            function addEvent(ele,type,handle){
                if(ele.addEventListener){
                    ele.addEventListener(type,handle,false)
                }else if(ele.attachEvent){
                    ele.attachEvent('on'+type,function(){
                        handle.call(ele)
                    })
                }else{
                    ele['on'+type]=handle
                }
            }

//绑定事件
            function addEvent(ele,type,handle){
                if(ele.addEventListener){
                    ele.addEventListener(type,handle,false)
                }else if(ele.attachEvent){
                    ele.attachEvent('on'+type,function(){
                        handle.call(ele)
                    })
                }else{
                    ele['on'+type]=handle
                }
            }
            //解除事件
            function removeEvent(ele,event,handle){
                if(ele.removeEventListener){
                    ele.removeEventListener(type,handle,false)
                }else if(ele.detachEvent){
                    ele.detachEvent('on'+type,function(){
                        handle.call(ele)
                    })
                }else{
                    ele['on'+type]=''
                }
            }
            //阻止冒泡
            function stopPop(e){
                if(e.stopPropagation){
                    e.stopPropagation()
                }else{
                    e.cancelBubble=true
                }
            }
            //阻止默认事件
            //1、return false 2、event.preventDefault() 3、event.returnValue=false
            function stopDefaultEve(e){
                if(e.preventDefault){
                    e.preventDefault()
                }else{
                    e.returnValue=false
                }
            }