如何修复循环＆＃34;转到底部＆＃34;当我滚动顶部

Question

点击Go To Bottom后，将鼠​​标滚过它只是自动滚下来？方式仍然使用setInterval没有失败没有夏天？ 链接源代码 http://jsfiddle.net/trananh/v7gdr4n0/

＆＃13;

＆＃13;

var process;
            var delay = 50;
            var scrollPixel = 20;
            //Fix Undefine pageofset when using IE 8 below;
            function getPapeYOfSet() {
                var yOfSet = (typeof (window.pageYOffset) === "number") ? window.pageYOffset : document.documentElement.scrollTop;
                return yOfSet;
            }

            function goToBottom() {
                process = setInterval(function () {
                    var yOfSet = getPapeYOfSet();
                    if (yOfSet >= document.body.scrollHeight) {
                        clearInterval(process);
                    } else {
                        window.scrollBy(0, scrollPixel);
                    }
                }, delay);
            }

＆＃13;

＆＃13;

＆＃13; JAvascript函数goToBottom