横向滚动条 根据滚轮滚动而移动 制作 与 问题处理

<div style="width: 5000px;">test</div>

$(function() {
    // 设置每次滚动长度，单位 px
    var scroll_width = 100;
    var scroll_events = "mousewheel DOMMouseScroll MozMousePixelScroll";
    $(document).on(scroll_events, function(e) {
        var delta = e.originalEvent.wheelDelta || e.originalEvent.detail;
        // 滑轮向下滚动，滚动条向右移动，scrollleft+
        if(delta > 0) {
            $("html").scrollLeft($("html").scrollLeft() + scroll_width);
        }
        // 滑轮向上滚动，滚动条向座移动，scrollleft-
        else {
            $("html").scrollLeft($("html").scrollLeft() - scroll_width);
        }
    });
});

window.onload = function() {
    // 监听鼠标滑轮
    var mousewheelevt = (/Firefox/i.test(navigator.userAgent))
        ? "DOMMouseScroll" : "mousewheel";
    if(document.attachEvent) {
        document.attachEvent("on" + mousewheelevt, function(e){
            mousewheel_event(e.wheelDelta);
        });
    }
    else if(document.addEventListener) {
        document.addEventListener(mousewheelevt, function(e){
            mousewheel_event(e.detail);
        }, false);
    }
            
    // 设置每次滚动长度，单位 px
    var scroll_width = 100;
            
    function mousewheel_event(delta) {
        // 滑轮向下滚动，滚动条向右移动，scrollleft+
        if(delta > 0) {
            document.getElementsByTagName("html")[0].scrollLeft
                += scroll_width;
        }
        // 滑轮向上滚动，滚动条向座移动，scrollleft-
        else {
            document.getElementsByTagName("html")[0].scrollLeft
                -= scroll_width;
        }
    }
};

 $("html").scrollLeft()

$("html").scrollLeft()
而需要
$(window).scrollLeft(100);