网站美化教程：为网站添加一个横向进度条

JS代码

$(function() {
function scroll_fn(){
document_height = $(document).height();
scroll_so_far = $(window).scrollTop();
window_height = $(window).height();
max_scroll = document_height-window_height;
scroll_percentage = scroll_so_far/(max_scroll/100);
$('#load').width(scroll_percentage + '%');
}
$(window).scroll(function() {
scroll_fn();
});
$(window).resize(function() {
scroll_fn();
});
});

html部分

<div id="load"></div>

CSS部分

#load {
    background-color: #ff6651;
    height: 3px;
    width: 0px;
    position: fixed;
    left: 0px;
    top: 0px;
    z-index: 9999;
}